Earlier quoted context omitted.
i deeply hate being without a numpad. I understand it's duplicated space, but typing numbers on a numpad is just a million times faster than going above the alphabet keys.
A virtual numpad via a modifier key can be the best of both worlds; no extra space is used and your hands stay in the center. Example with image: https://andrew.kvalhe.im/2021-03-19 With this method you can customize the location and surrounding mathematical operators.
It's an impoverished numpad that requires different muscle memory that you probably don't use often enough to master.
Personally I never use the virtual numpad on my devices, I use the full numpad if available or I usr the top row of number keys.