I have a Dell keyboard with a built-in number pad. On some applications when I use it, it works normally. On IntelliJ, when I type on the number pad, it doesn't type at all. On Excel, it primarily types with spaces between the numbers/symbols. How could I fix this or do I need to get an Apple keyboard?
I have a Mac mini (Late 2014) running macOS High Sierra 10.13.6.