serpol30 10/100=1/10
400/1000=4/10=2/5
600/800=6/8=3/4
800/1000=8/10=4/5
56/70=28/35=4/5
36/90=13/30
66/110=33/55=3/5
96/110=48/55

123serega456 800/1000=4/5,10\100=1\10,400\1000=2\55,600\800=3\4,56\70=4\5,36\90=2\5,66\110=33\55,96\100=24\255