There are 5 hens and 2 roosters on the field, and then a hen comes, how much do the roosters account for in this flock?
场地上来了5只母鸡和2只公鸡，后来跑来了一只母鸡，这时公鸡占这群鸡的多少
<gadget id="calculator">5 + 1 + 2</gadget>
<output>8</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>