18 : 3 * 2 = 12450 : 5 = 90240 : 4 * 3 =18060 : 10 = 6300 : 5 * 4 = 24060 : 10 * 9 = 5436 : 4 = 9
18 => 12 450 => 90 240 => 180 60 => 6 целых 2/3
300 => 240
36 => 9