9/4×6/10÷3/5 8/13÷7+1/7×6/13
4/15÷(7/10+1/5)11÷25/28÷22/25
5/7 ×7/4÷ 15 (6/9×1/6)×54
5/8+1/9+3/8+1/9(5/12+1/5)×60
(1/2+1/3+1/6)×125/6÷ 5/13 ÷5/6÷ 8/13
30 ÷(1+1/4) 200×(1-1/4)
9/4×6/10÷3/5 8/13÷7+1/7×6/13
4/15÷(7/10+1/5)11÷25/28÷22/25
5/7 ×7/4÷ 15 (6/9×1/6)×54
5/8+1/9+3/8+1/9(5/12+1/5)×60
(1/2+1/3+1/6)×125/6÷ 5/13 ÷5/6÷ 8/13
30 ÷(1+1/4) 200×(1-1/4)