There are 2500 chickens, ducks and geese in a farm, and the ratio of chickens, ducks and geese is 5:4:1. How many geese do you raise?
一个饲养场养鸡、鸭和鹅共2500只，其中鸡、鸭、鹅的只数比是5：4：1．养鹅多少只？
<gadget id="calculator">5 + 4 + 1</gadget>
<output>10</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">2_500 * (1/10)</gadget>
<output>250</output>

<result>250</result>