cylindrical tin oil barrel is filled with gasoline, if the gasoline in the barrel is poured out (2/5), there will be 24L left. It is known that the bottom area of the oil drum is 8dm2, how many decimeters is the height of the cylindrical iron skin oil drum measured from the inside?
一个圆柱形铁皮油桶装满了汽油，如果把桶里的汽油倒出(2/5)，还剩24L．已知油桶的底面积是8dm2，从里面量，圆柱形铁皮油桶的高是多少分米？
<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) / 8</gadget>
<output>5</output>

<result>5</result>