(1) A pile of coal can be burned for 8 days. How many parts of this pile of coal can be burned every day? How many parts of this pile of coal can be burned in 3 days?

1 / 8 3 / 8 the result is that the process 1 pile of coal is burned as a whole in one minute, eight days, one day divided by eight
In the same way, 3 divided by 8 in three days

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