My laptop didn't have a numpad, so I coded it with an Arduino and Python. I'm using Elegoo Arduino MEGA 2560 and keypad from this kit.
- Keypad - https://github.com/Chris--A/Keypad
- PySerial - https://pypi.org/project/pyserial/
- PyAutoGUI - https://pypi.org/project/PyAutoGUI/
Inside of configuration group of .ino and .py file.