The number of chickens raised in the farm is 1500, which is less than the number of ducks (3/8). How many fewer chickens are raised in the farm than ducks?
饲养场养鸡1500只，比鸭的数量少(3/8)，饲养场养的鸡比鸭少了多少只？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1_500 / (5/8)</gadget>
<output>2_400</output>

<gadget id="calculator">2_400 - 1_500</gadget>
<output>900</output>

<result>900</result>