It's a very creative take for a Tetris-style puzzler with potential, but I think there's definitely room for improvement. It feels kind of overwhelming to have to figure out how different numbers and operations compute together under a short time before the next piece drops, all while the target value seems to change based on which column seems to drop. I definitely think both UI and gameplay pacing can be improved, as I see some potential in this being a really nice number puzzler (kinda like Drop7).