1/2 ---(20:2=10) 1/2 * 10/10=10/20
3/4 ---(20:4=5) 3/4 * 5/5=15/20
4/5 ---(20:5=4) 4/5 * 4/4=16/20
.
1/4=1/4 * 9/9=9/36
2/3=2/3 * 12/12=24/36
5/6=5/6 * 6/6=30/36
7/9=7/9 * 4/4=28/36
11/18=11/18 * 2/2=22/36
11/70=???
.
3/4=3/4 * 16/16=48/64
5/8=5/8 * 8/8=40/64
13/16=13/16 * 4/4=52/64
31/32=31/32 * 2/2=62/64
42/128=42/128 : 2/2=21/64
64/256=64/256 : 4/4=16/64
.
1/4=1/4 * 25/25=25/100
2/5=2/5 * 20/20=40/100
9/10=9/10 * 10/10=90/100
17/20=17 * 5/5=85/100
24/25=24/25 * 4/4=96/100
5/125=4/100