20/8 = 5/2 = 2 1/2
15/10 = 3/2 = 1 1/2
28/21 = 4/3 = 1 1/3
10/6 = 5/3 = 1 2/3
14/4 = 7/2 = 3 1/2
40/15 = 8/3 = 2 2/3
20/8 = 5/2 = 2 1/2
15/10 = 3/2 = 1 1/2
28/21 = 4/3 = 1 1/3
10/6 = 5/3 = 1 2/3
14/4 = 7/2 = 3 1/2
40/15 = 8/3 = 2 2/3