A pile of coal is burned out in a week, and the average daily amount of (1/5) tons is burned. How many tons are there in this pile of coal? ((())/(())) of this pile of coal is burned on average every day.
一堆煤一星期烧完，平均每天烧(1/5)吨，这堆煤共有多少吨，平均每天烧了这堆煤的((())/(()))．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 7</gadget>
<output>7/5 = around 1.4</output>

<result>7/5 = around 1.4</result>