There are 40 chickens, which is 20% of ducks. How many chickens and ducks are there?
鸡有40只，是鸭的20%，鸡鸭共多少只？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">40 / (1/5)</gadget>
<output>200</output>

<gadget id="calculator">200 + 40</gadget>
<output>240</output>

<result>240</result>