15/20=3/4
8/10=4/5
15/10=3/2
20/30=2/3
6/18=1/3
6/9=2/3
14/49=2/7
9/15=3/5
12/15=4/5
14/18=7/9
8/12=2/3
12/18=2/3
20/70=2/7
8/36=2/9
30/75=2/5
5/50=1/10
9/45=1/5
11/66=1/6
17/51=1/3
20/118=10/59
236/444=59/111
68/102=2/3
128/28=4 4/7
108/72=1 1/2
120/168=5/7
720/640=1 1/8
156/208=3/4
288/432=2/3
160/192=5/6
2304225/18762975=7/57