竖式计算

10.7-0.37=

5.68+3.03=

31.2-8.5=

计算，能简算的要简算．
18×5.46+1.8×4.54=；          0.32×0.25×12.5=；         21÷0.25÷0.4=；
02×9.9+0.1=；                  0.25×4.78×4=；           3.2×10.2=．