Xiaohong's domestic chickens account for 2/9 of the total number of chickens, and what percentage of the total number of chickens is the hen?
小红家养的公鸡占养鸡总数的(2/9)，母鸡占养鸡总数的几分之几？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">1 - (2/9)</gadget>
<output>7/9 = around 0.777778</output>

<result>7/9 = around 0.777778</result>