This is a Calculator, which takes RPN as input, and computes the equation
The program still has couple of bugs, but as long as your equation is written correctly, it should compute it correctly, and if you fail either my program or python will give you an error.
It can add, subtract, multiply, divise, mod, and rise to the power. It also handles negative numbers.
I might add more operations if I get a cool idea, on how to implement them.