用简便方法计算下面各题．
13.2﹣3.7﹣6.3               10.26﹣（3.78+4.26）         （+）×24
101×7.8                     ×24+176×20%                32×12.5×O.25
8.6×+8.6÷3                  700÷12.5÷8．