Idahowalker:
Look up the stepper motor "step angle"The step angle should help with your calculations.
Tbot1000:
If it is 375 degrees, I want it to display 15 degrees. Likewise. if it is -375 degrees, I want it to show -15. Also, I know 1.8's significance - it makes 200(steps)*1.8 = 360. 9 does the same thing. However, what do I do to make the variable reset to zero, than keep counting?
You, quite nicely, describe what you want to do.
A few conditionals will follow the rules as described. Something like if greater than 325 do some math thingies else if less then -375 then do some other math thingies.
Also the variable could be rest to 0 with a conditional such as if xxx > some number then x = 0.