The ducks raised in the poultry factory belong to chickens (2/3) and geese (4/5). There are 2400 chickens, how many geese are there?
养禽厂养的鸭是鸡的(2/3)，同时又是鹅的(4/5)，养的鸡有2400只，养的鹅有多少只？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(2/3) / (4/5)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">2_400 * (5/6)</gadget>
<output>2_000</output>

<result>2_000</result>