Can I answer my own question? Methinks it would be as follows, but would like to verify:
1/5 = 13/5 = 25/5 = 5 mod 12.
2/5 = 14/5 = 26/5 = 38/5 = 50/5 = 10 mod 12.
3/5 = 15/5 = 3 mod 12.
4/5 = 16/5 = 28/5 = 40/5 = 8 mod 12.
Can this be done on the sci calculator? Could not find a way to do it.