8.65×0.739 0.15×739
=0.739×（8.65 15）
=0.739×23.65
=（0.7 0.04-0.001）×23.65
=16.555 0.946-0.02365
=17.2645
0
8.65×0.739 0.15×739
=0.739×（8.65 15）
=0.739×23.65
=（0.7 0.04-0.001）×23.65
=16.555 0.946-0.02365
=17.2645