Extremely creative idea, hooked me instantly. The game balance is also done well which made the game very enjoyable. The animation of the number counting down is very satisfying. I am rooting for this one to get featured in the GMTK video. Genuinely great job! As for feedback, I do like your vision of dragging numbers through the operator and into the big number, but it felt unintuitive the first time. But once I got it, dragging numbers felt very satisfying. Best of luck!