Press the green flag. When you are asked what your first numeral is, type in the first number of the math problem you want. When asked for the second one, type in the second number. Unfortunately, multi-step problems are not supported. When asked which operation, type in any of the following exactly how they appear: Addition Subtraction Multiplication Division Please note that the first letter of these operations can be lowercase or uppercase, but the rest of the letters must be lowercase.
I added division, addition, and subtraction. Credit goes to @CrayMCFreak for creating the original project. Tip: If you type in two specific numbers, and tell the calculator to do addition, something will happen. You'll just have to figure it out to find out what (don't look at the code for this... that's cheating)