28.67*67+286.7*32+573.4*0.05咋么简便计算?

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28.67*67+286.7*32+573.4*0.05咋么简便计算?
28.67*67+286.7*32+573.4*0.05咋么简便计算?

28.67*67+286.7*32+573.4*0.05咋么简便计算?
28.67*67+286.7*32+573.4*0.05
=286.7*6.7+286.7*3.2+286.7*0.1
=286.7*(6.7+3.2+0.1)
=286.7*10
=2867