what is the keycode of "*" and "+"

I handwired a numpad ,  but dont know how to add keycode for two keys

``` bash
KEYMAP(NLCK, SLSH, KP_ASTERISK, MINS,  \
                7,   8,   9, PPLS,       \
                4,   5,   6,            \
                1,   2,   3,            \
                0,   DOT, ENT),
```
