Type in the numbers and voila! Add or +, subtract or -, multiply or x, divide or /, square root or sqrt, square or sqrd, cubed root or cbrt, cube or cbd, and round or rnd.
Only a draft, I'm probably going to add more functions, only does +, -, /, x, sqrt, sqrd cbrt, cbd, and rnd. Add more functions and remix! The music is good, right?