Oh, dude, that's like basic math. 480 divided by 12 is 40. It's like dividing a Pizza into 12 slices and each slice would have 40 delicious pepperoni pieces.
12 divided 480 = 0.025
480/6 = 80
0.025
40
40.1765
41.5
480.3333
0.2188
240
188.9764
4.0937
480