cylindrical bucket is filled with water, and after pouring out (2/5), there are 24 liters left. If the height of the bucket is 5 decimeters, what is the area of the bottom of the bucket?
一个圆柱形水桶里装满了水，倒出(2/5)后，还剩下24升．如果水桶的高是5分米，水桶的底面积是多少平方分米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">24 / (3/5) / 5</gadget>
<output>8</output>

<result>8</result>