My right arrow key broke.

You can download third party software and remap your key, though that means it would be remaped in everything you do until you disable it, I'm on Mobil but if you'd like I can get you the name of the program I use to use to remap my keys.

If this is allowed of course @Kimberly

 

Since no one responded to my question asking if this is allowed I'm going to assume it is, when i need to remap keys i use KeyTweak. I haven't had to in a long time but here is the link:
http://www.majorgeeks.com/mg/getmirror/keytweak,3.html

 

Remapping a key to an other location is fine (similar as using a game controller).

 

Buy a new keyboard ?