Description
Congratulations, it's a calculator! This is a very simple calculator, it was built in a few hours with the specific purpose to calculate rates, PEDs and amounts. Therefor, it will not handle very large calculations (numbers in the billions) and simply does not do more than two decimals behind the dot.
Usage
You can use it by clicking the buttons in the window, but it's a lot easier to just use the keyboard. You can use the normal numbers on your keyboard, as well as the ones on your numpad. Numlock being on or off does not matter.
You can use your Enter/Return for =, C for Clear and A for Clear All. Note that in the normal key area of your keyboard, * (shift 8 usually) and = (shift + usually) will always be treated as 8 and +, regardless of you holding the shift button. You can also use backspace for obvious the obvious purpose.
Clear will clear the current input value and reset to 'no calculation', while Clear All will also clear the history list.
Doubleclicking a value in the history list will give you the result of that calculation as value in the 'current calculation' box.