Just put a number in and watch! --------------------------------------------------------------------------------- This scratch calculator was made to prove Collatz Conjecture, which is basically a math problem that says if the number is odd, multiply it by 3 and add 1, and if it's even, divide by 2, and then take the result and do the same thing, over and over again. The idea with this is that the end result will always go back to a 4, 2, 1 loop because 3*1+1=4, and 4/2=2, and 2/2=1, and it's a loop.