8/9 = 16/18, 24/27, 32/36, 40/45, 48/54, etc.
3/10 = 6/20, 9/30, 12/40, 15/50, 18/60, etc.
5/6 = 10/12, 15/18, 20/24, 25/30, 30/36, etc.
1/7 = 2/14, 3/21, 4/28, 5/35, 6/42, etc.
3/4 = 6/8, 9/12, 12/16, 15/20, 18/24, etc.
5/7 = 10/14, 15/21, 20/28, 25/35, 30/42, etc.
