用竖式计算下面各题.10.8+30.5 5﹣2.615.2﹣4.3 5.9+10.7.
(1)238÷238(2)
(1)×39 + ×27 (2)18.25×11 - 17÷ (1 - )
(1)64× (2) 54÷17
(1)×8(2)75×
计算:(9+7)÷(+)