Q: Say you've got to add 1234 and 5678. Enter 1234 on the abacus by pushing up four beads in the ones place, three in the tens place, two in the hundreds place, and one in the thousands place. The first numbers you'll add are the 1 and the 5 from the thousands place, in this case moving the single bead from the top row of that column down to add the 5, and leaving the lower bead up for a total of 6. Likewise, to add 6 in the hundreds place, move the top bead in the hundreds place down and one bead from the bottom row up to get a total of 8. Since adding the two numbers in the tens place will result in 10, you'll carry over a 1 to the hundred place, making it a 9 in that column. Next, put all the beads down in the tens place, leaving it zero. In the ones column, you'll do essentially the same thing. Eight plus 4 equals 12, so you'll carry the one over to the tens place, making it 1. This leaves you with 2 in the ones place. You're left with a 6 in the thousands column, a 9 in the hundreds, a 1 in the tens, and a 2 in the ones: 1,234 + 5,678 = 6,912. Borrow digits from the previous column instead of carrying them over. Say you're subtracting 867 from 932. After entering 932 into the abacus, start subtracting column-by-column starting on your left.  Eight from nine is one, so you'll leave a single bead up in the hundreds place. In the tens place, you can't subtract 6 from 3, so you'll borrow the 1 in the hundreds place (leaving it zero) and subtract 6 from 13, making it 7 in the tens place (the upper bead up and two lower beads). Do the same thing in the ones place, "borrowing" a bead from the tens place (making it 6) to subtract 7 from 12 instead of 2. There should be a 5 in the ones column: 932 - 867 = 65.
A: Input your first number. Start adding from the left. Complete an exchange. Count your beads to get the answer. Subtract by doing the addition process in reverse.

Article: DEET (N, N-diethyl-meta-tolumide) is the most effective chemical ingredient for repelling bugs. Apply bug repellent containing DEET to all exposed areas of skin before going outside. Be sure to reapply the repellent according to the product's label's instructions.   Make sure not to use DEET-based repellents when wearing sunglasses or plastic eyeglass lenses, as the chemical can dissolve plastics and some synthetic materials.  A few studies have suggested there can be adverse side effects to DEET. DEET-containing repellents have however been approved by the EPA and the Center for Disease Control as safe for long-term human use when used according to the label instructions. Picaridin is a synthetic compound derived from plant extract. It is man-made like DEET, but a compound rather than a chemical.  Picaridin has not been as widely tested as DEET, but current studies show it to be just as effective, and it is not harmful to any materials. Many of the major bug repellent producers, such as Cutter, carry repellents based on Picaridin. Permethrin is both a repellent and insecticide, meaning that has the ability to kill bugs on contact as well as repel them by scent. It is recommended by the EPA (U.S. Environmental Protection Agency) for use on clothing, shoes, bed nets, and camping gear.  Spray only on fabrics and do not spray on clothing while you're wearing it. Use only repellents and permethrin-based products that have specific instructions for treating clothing.  After an item has been sprayed with a product containing permethrin, the fabric will repel insects through several washings.
Question: What is a summary of what this article is about?
Use a DEET-based chemical repellent. Apply a Picaridin-based repellent. Spray permethrin repellent on clothing.

Problem: Article: Add just enough water to some baking soda to form a paste. Apply the paste topically to the bite. Use a meat tenderizer, such as Spice Cargo, that contains the enzyme papain and mix with a few drops of water to make a paste. Applied topically, this mix may help control itching and swelling. Crush an aspirin and add a little water to create a paste. Aspirin applied topically may help with the pain. Follow package dosing instructions.
Summary: Try a home remedy for relief from the pain and itching. Ingest an over-the-counter pain medication, such as aspirin or acetaminophen.

Q: You can use any web browser on PC or Mac.  This is the home page for Amazon. It's the first tab with bold letters in the upper-right corner.  Placing the mouse cursor over this tab displays a list of account options.  Clicking this tab takes you to the sign-in screen. If you are signed in under a different account, place the mouse cursor over Account & Lists and click Sign Out at the bottom of the menu. It's the grey button at the bottom of the Sign-in screen.  This opens a web form you can use to create an Amazon account. Use the first bar at the top of the page to enter your full name. Use the second bar to enter an email address.  This is the email address you will use to log in to Amazon on other devices.  Make sure you use an email address that you can access and that you can remember. Use the third bar in the form to enter the password you would like to use to sign in.  Your password will need to be at least 6 characters long.  A good password should have a combination of capital and lower-case letters, numbers and special characters (i,e; &, @, !).  Make sure you use a password that you can remember, or that you write down your password and put it in a safe place. It's best not to store your password on your computer or smartphone, as this may be a security risk. Use the last line on the page to retype your password exactly as you entered it the first time.  This confirms your password. It's the yellow button at the bottom of the form.  This sends a confirmation email to the email address you entered containing a one-time password (OTP). After you register your account, the website displays a page asking you to enter your one-time password.  To get the OTP, you will need to check the email account you entered. Leave the Amazon registration an page open and use a separate tab or browser to check your email.  You can also check your email using your smartphone, or another app, such as Outlook, Apple Mail. The OTP is a 6-digit number that is displayed in large bold letters in the center of the page.  Write down this number or copy it. If you have not received an email from Amazon, check the email address you entered and click Resend OTP at the bottom of the Amazon registration page. After you retrieve the one-time password, return to tab or web browser you were using to create a new Amazon account. Enter the six-digit OTP in the space provided and click Verify.  It's the yellow button at the bottom of the page.  This verifies your account and signs you into Amazon under your new account. If you receive a message that says the OTP is invalid, click "Resend OTP' and check your email.  Enter the new OTP and click Verify.
A:
Go to https://www.amazon.com using a web browser. Click Account & Lists. Click Create Your Amazon Account. Type your name. Enter a valid email address. Type your desired password. Re-type your password. Click Create Your Amazon Account. Check your email. Copy or write down the One-Time Password. Return to the Amazon registration page. Enter the One-time password and click Verify.