4
It is 7/12 divided by 20 = 7/240
12
20
20
12.5
1.6667
20
Well, darling, CD divided by XX is simply CD/XX. It's like dividing apples by oranges - they're just not meant to be together. So, in this case, the result would be CD over XX. Hope that clears things up for you, sugar.
1.6667
It is 12
12