How to assign hotkeys to a connected Keypad device?

Question

Programming

There is a device Wireless Numeric Keypad 2.4G Model: K60. The wireless counterpart of the calculator on the keyboard (which is on the right). When connected, it is determined automatically without drivers. Duplicates completely pressing the numbers on the keyboard. The question is how to make it so that, for example, pressing the "6" key switches the next track on the running player?
And another question, on the Keypad there is a "Calculator" key, it is necessary that it does not work.

Answer 1

I have something similar done for my keyboard with additional keys.
Very briefly:
1. Install either Autoit or Autohotkey;
2. Find out the scancodes of your device's keys (there are scripts);
3. We write a script that, when a certain key is pressed on your device, emulates a certain key combination in the system (you can add a launch depending on the active window, for example, the player).

Answer 2

There is also the MKey app.