There are 3,200 hens in the chicken farm, and the roosters belong to the hens (1/8). How many roosters are there?
养鸡场有母鸡3200只，公鸡是母鸡的(1/8)，公鸡有多少只？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">3_200 * (1/8)</gadget>
<output>400</output>

<result>400</result>