计算下面各题．
0.24+3.6×5                     1.82+3.89+0.18   
20﹣1.32﹣2.68                 （4+0.4）×0.25    
0.25×7×4                      0.48×0.7+0.52×0.7
28.6×101﹣28.6                 0.25×1.25×32．