magic keyboard

You may have unintentionally activated Mouse Keys,

see > https://support.apple.com/guide/mac-help/if-a-numeric-keypad-doesnt-work-mchlp2366/mac

You're welcome.

Those are for selecting the marked functions and arrowing up/down/right/left.

see > https://support.apple.com/en_US/manuals/peripherals

That section of the keyboard is very useful when you launch the Calculator app. 🙂👍🏽