The number of roosters is the number of hens (3/8), and the number of hens is the total number.
公鸡的只数是母鸡的(3/8)，母鸡只数是总只数的多少．
<gadget id="calculator">3 + 8</gadget>
<output>11</output>

<gadget id="calculator">8 / 11</gadget>
<output>8/11 = around 0.727273</output>

<result>8/11 = around 0.727273</result>