It takes (2/5) hours for a car to travel 40 kilometers. On average, one hour is less than one kilometer?
一辆汽车行40千米用了(2/5)小时，平均一小时行名少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">40 / (2/5)</gadget>
<output>100</output>

<result>100</result>