The ratio of the number of roosters to hens is 3:8, what fraction of the number of roosters is the number of hens?
公鸡与母鸡的只数比是3：8，公鸡只数是母鸡只数的几分之几？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>