计算：3.68×15.7-31.4+15.7×0.32=_．
问题描述：
计算：3.68×15.7-31.4+15.7×0.32=______．
答
3.68×15.7-31.4+15.7×0.32
=15.7×（3.68+0.32）-31.4
=15.7×4-31.4
=31.4×2-31.4
=31.4
故答案为31.4