Sorry, if you want to know the trick, a magician never reveals his secrets. Have fun! Oh, by the way, the reason why I'm not coding a question-answer format is because anyone could get in to see the trick.
Just a filler project, since I have so much stuff to work on, I just wanted you to know I'm still active on Scratch! Comment in this format: "3: <remainder> 5: <remainder> 7: <remainder>"