0.0039×0.16÷(0.03×0.04×0.05)怎么简算
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发布时间：2024-10-23 22:59
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=39/10000×16/100÷(3/100×4/100×5/100)
=624/1000000÷60/1000000
=624/1000000×1000000/60
=624/60
=52/5
=10.4
