Fun little thing. Don't mess around or abuse my 4 function calculator. Please? Hitting equals twice sometimes breaks it. If you break it, there is a chance that clear will fix it. If not, hit the green flag again.
Made entirely by me. I know It didn't take you long to read this, but thanks. Here's a secret; Press P on your keyboard to activate Special mode. Special mode is... well... Special. You'll see.