Thank you!
That bug is interesting... I thought maybe it was something I accidentally broke along the way, but I tried both backspace and delete and they removed the number for me. I'm realizing I should have made a way to clear it for mobile devices, and this comment made me aware that I needed to put those in the controls in the description! Were those keys not working for you, or was it just my neglecting to mention them in the controls section? (so I know if there's something else I'll need to fix later)