A farm raises 2000 chickens and 1000 ducks, and the number of ducks is less than that of chickens ((())/(())).
一个饲养场，养鸡2000只，养鸭1000只，养的鸭比鸡少((())/(()))．
<gadget id="calculator">2_000 - 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 / 2_000</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>