I am trying to get the [Numpad Div] and the [Numpad Mult] key to be a global keyboard shortcut.
When i press one Key alone nothing is supposed to happen. When i press both together I want to run a script.
On my Windows PC i have an AutoHotkey script running for that purpose, but afaik AutoHotkey doesn't run on Linux.

Tried configuring it in the "System Settings/Shortcuts and Gestures", but it won't let me do that.
Looked into the "~/.kde/share/config/khotkeysrc" but I was confused and didn't find anything that would help me with my problem.

Any idea on how to do this? Any help would be greatly appreciated.

I'm guessing these are the standard / and * keys on your numpad? If so, does "xev" register them any different from the normal / and * keys present on the main part of your keyboard?

Unfortunately I suspect that you won't be able to set a keyboard shortcut here - as KDE requires keys to be combined with a meta key (such as Control, Shift, Alter, etc) before they can be a shortcut.

Those keys are registered as different keys by xev. One being 'slash' and 'asterix' the other two 'KP_Divide' and 'KP_Multiply'.
Too bad about the requirement for the meta keys. I hoped there would be a workaround for that.

The only workaround I am aware of would involve changing one of them into a meta key, using xmodmap. Unfortunately this would render it useless for normal operations. As Xmodmap can be used to add mouse shortcut support to a certain extent, it is plausible a workaround to trigger a certain Meta + Key when these two keys are pressed is possible. You would need to check their documentation for more on this however.

Not what I was looking for, but still very interesting and good to know.
Thanks!