There are 5 tons of coal in the cafeteria. On average, (1/5) tons are burned every day. How many days can it be burned?
食堂有煤5吨，平均每天烧(1/5)吨，可以烧多少天．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 / (1/5)</gadget>
<output>25</output>

<result>25</result>