The first it solves is square root. It then solves cube root. Finally, it solves the arcsine. If the answer is irrational or has a repeating decimal, it will never end the calculations even though Scratch doesn't allow more exact answers. This program can solve any equation. If you're finding the square root, it solves x^2=y where y is the number you're finding the square root of and it is solving for x.