639/1065 = 213/355
14/49 = 2/7
627/836 = 111/148
336/560 = 42/70 = 3/5
18/24 = 3/4
42/49 = 6/7
1422/1659 = 474/553
20/50 = 2/5
33/55 = 3/5
4/6 = 2/3
552/1380 = 23/58
39/52 = 3/4
18/30 = 3/5
984/1148 = 123/143
20/25 = 4/5
504/882 = 14/25
6/10 = 3/5
639/1065 = 213/355
14/49 = 2/7
627/836 = 111/148
336/560 = 42/70 = 3/5
18/24 = 3/4
42/49 = 6/7
1422/1659 = 474/553
20/50 = 2/5
33/55 = 3/5
4/6 = 2/3
552/1380 = 23/58
39/52 = 3/4
18/30 = 3/5
984/1148 = 123/143
20/25 = 4/5
504/882 = 14/25
6/10 = 3/5