Im in algebra and I needed to check my homework, so I got this app. But it kept giving really high numbers. I did some experimenting and found out it doesnt have one of the most basic functions of a calculator PEMDAS, or Parenthesis Exponents Multiplication Division Addition Subtraction. This an order you do things in a problem. Example: (5+2) + 5^2 + 5 x 2. This equals 42 but the calculator will say 298 therefor you really need to fix this because this will cause many problems to be wrong. Until fixed this should be taken down. It can do things like 5 + 2 but most calculators on phones can do this anyway.