38.08÷13.6*0.72 4.07×8.6+9.125 8×7.2×1.2 能简便计算吗?如果能要怎么算?

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38.08÷13.6*0.724.07×8.6+9.1258×7.2×1.2能简便计算吗?如果能要怎么算?38.08÷13.6*0.724.07×8.6+9.1258×7.2×1.2能简便计算吗?如果

38.08÷13.6*0.72 4.07×8.6+9.125 8×7.2×1.2 能简便计算吗?如果能要怎么算?
38.08÷13.6*0.72 4.07×8.6+9.125 8×7.2×1.2 能简便计算吗?
如果能要怎么算?

38.08÷13.6*0.72 4.07×8.6+9.125 8×7.2×1.2 能简便计算吗?如果能要怎么算?
38.08÷13.6*0.72
=(40.8-2.72)÷13.6×0.72
=40.8÷13.6×0.72-2.72÷13.6×0.72
=3×0.72-0.2×0.72
=2.16-0.144
=2.016
4.07×8.6+9.125
=(4+0.07)×8.6+9.125
=4×8.6+0.7×8.6+9.125
=34.4+0.602+9.125
=35.002+9.125
=44.127
8×7.2×1.2
=7.2×9.6
=7.2×(10-0.4)
=7.2×10-7.2×0.4
=72-2.88
=69.12