Divide 20 tons of coal into 5 parts on average, how many tons are in each part, and each part accounts for ((1)/(5)) of the total.
把20吨煤平均分成5份，每份有多少吨，每份占总数的((1)/(5))．
<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<result>4</result>