It is an integer - not a fraction.
12.5% = 1⁄8
there are 16 c in a gallon (US). 12/16 = 3/4 = 0.75
12/12 = 1 and there is no proper equivalent improper fraction for 1. You could write 1 as 10/n where n is any non-zero integer but that is a completely pointless exercise.
because it is!
douze
20
144
108
No.
9.6
168
48%