There are 40 calves on the farm, which happen to belong to the big cow (2/5). How much less are the calves than the big cow?
农场有小牛40头，正好是大牛的(2/5)，小牛比大牛少多少头？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">100 - 40</gadget>
<output>60</output>

<result>60</result>