0,6 = 6/10, 0,3=3/10 , 2,4 = 24/10, 1,8= 18/10
надо по 4
0.6=3/5, 12/20, 18/30
0,3 = 6/20, 9/30,12/40
2,4=48/20, 72/30, 96/40
1,8=36/20, 54/30, 72/40