1/8=125/8*125=125/1000=0,125
3/8=125*3/8*125=375/1000=0,375
5/8=125*5/8*125=625/1000=0,625
7/8=125*7/8*125=875/1000=0,875
1/125=1*8/125*8=8/1000=0,008
4/125=4*8/125*8=32/1000=0,032
11/125=11*8/125*8=88/1000=0,088
1/200=1*5/5*200=5/1000=0,005
3/200=3*5/5*200=15/1000=0,015
21/100=21*10/100*10=210/1000=0,21