计算下面各题（1）24×23÷3÷8（2）35×58÷14-12（3）152×5.7+5.9×7.5-1.6×712（4）[14-（18×9.5-8.5÷8）]÷1.25．

Question

计算下面各题
（1）24×(2)/(3)÷3÷8
（2）(3)/(5)×(5)/(8)÷(1)/(4)-(1)/(2)
（3）(15)/(2)×5.7+5.9×7.5-1.6×7(1)/(2)
（4）[(1)/(4)-（(1)/(8)×9.5-8.5÷8）]÷1.25．

Answer 1

①24×(2)/(3)÷3÷8
=24×(2)/(3)÷（3×8）
=(2)/(3)×（24÷24）
=(2)/(3)×1
=(2)/(3)

②(3)/(5)×(5)/(8)÷(1)/(4)-(1)/(2)
=(3)/(8)×4-(1)/(2)
=(3)/(2)-(1)/(2)
=1

③(15)/(2)×5.7+5.9×7.5-1.6×7(1)/(2)
=7.5×5.7+5.9×7.5-1.6×7.5
=7.5×（5.7+5.9-1.6）
=7.5×10
=75

④[(1)/(4)-（(1)/(8)×9.5-8.5÷8）]÷1.2
=[(1)/(4)-(1)/(8)×（9.5-8.5）]÷1.2
=[(1)/(4)-(1)/(8)]÷(6)/(5)
=(1)/(8)×(5)/(6)
=(5)/(48)