直接写出下面各题的结果．
24÷0.8=          3.82﹣1.80=        2.6÷20%=         6.28×0.5=           10﹣2÷7=   
408×10%=        8.4÷3=            2.02+0.4=          2.8÷0.1=            5.4+8=   
1÷0.2×1÷0.2=     0.125×2.5×8=        1÷×=           2﹣﹣=         1÷×=   
×÷×=