(1)9.9×9.8÷0.9

(2)0.375÷(0.375×2)

(1)1.2÷0.24×5.8

(2)0.1÷0.1÷0.1－0.1

(1)0.876÷1.2=________

(2)16.64÷13=________

(1)2.24÷0.8=________

(2)212.5÷0.25=________

(1)21÷24=

(2)741÷0.13=

(1)0.054÷3.6=

(2)91.2÷57=

根据5.05×0.72=3.636，直接写出下面两个除法算式的商．

(1)3.636÷5.05=

(2)3.636÷0.72=

31.067÷22(凑整到百分位)

45.7×8.63(凑整到百分位)

42.35÷15(凑整到千分位)