This is a program for helping you to memorise Pi. You can either learn a digit, or you can test yourself. I currently know 57 digits of Pi! (3.14159265358979323846264338327950288419716939937510582097!) (Although I and all of the other pro's consider digits memorised to be digits after the decimal point, this project also includes the first 3, but not the point.)
If you want to use an accurate Pi Calculator, also by me, go here! https://scratch.mit.edu/projects/213533130/ (I had to move the digits past the decimal point into a new list element, so that Scratch wouldn't try to round them and you can see them. This project was ~1% programming, ~99% fixing off-by-one errors accounting for the decimal point.)