There are two basic ways to do fractions on your iPhone calculator. Here's what you need to know to use the built-in app.

Google Calculator is an online tool offered by Google that lets you use its website to do basic math calculations such as addition and subtraction. This is convenient if you are on a business trip or ...

If your 8-cylinder Chevrolet Camaro has 3 5/8 gallons of gas left and you have 1 1/2 gallons of spare gas in the trunk, you can figure out how many miles that will take you with the calculator on your ...