When you start the project, the cat will ask you for a number. Its will the add up every number up to it. Ex: if you choose 5, it will do 1+2+3+4+5 and give you the result, 15. If you want to see the cat do the math, then dont skip, but for larger numbers, its recomended to just skip because it would take too long.
I made this project in a few minutes because I was thinking about adding up every number up to 10, and then 100. I quite like the concept and the variable mechanics in it. It's only one line of code and I dont plan on expanding much.