There are 4 tons of brown sugar in the mall. If (1/4) tons are sold every day on average, how many days can they be sold out?
商场里有4吨红糖，如果平均每天卖出(1/4)吨，多少天可以卖完．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4 / (1/4)</gadget>
<output>16</output>

<result>16</result>