The ratio of the number of chickens, ducks, and geese in a farm is 5:3:2. There are 2,000 chickens and how many ducks are raised.
一个饲养场鸡、鸭、鹅只数的比是5：3：2，其中养鸡2000只，养鸭多少只．
<gadget id="calculator">2_000 / 5</gadget>
<output>400</output>

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

<result>1_200</result>