The number of chickens is 1/2 of that of ducks, the number of geese is 1/3 of that of chickens, and the number of geese is equal to the number of ducks.
鸡的只数是鸭的(1/2)，鹅的只数是鸡的(1/3)，鹅的只数为鸭的多少．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>