=24.6×4.6+24.6×4.4+24.6×1
=24.6×(4.6+4.4+1)
=24.6×10
=24624.6×1还是等于24.6，这是为分配率做准备，246×0.44=24.6×10×0.44=24.6×（10×0.44）=24.6×4.4