18/85 : 27/68 х 45/28 : 5/81

Question

18/85 : 27/68 х 45/28 : 5/81

Answer 1

1) 18/85 ÷ 27/68= 8/15
2) 8/15×45/28 = 6/7
3) 6/7÷5/81 = 13 31/35
Ответ : 13 целых 31/35