下列各题怎样简便就怎样算．
3.7×1.4×0.05            72×0.81+10.4                1.4×25+3.45
1.5×102                  1.25×0.7×0.8               2.7×3.7+0.37×73
8.7×99                   0.8×（12.5﹣1.25）          1.25×0.4×80×2.5．