A cylindrical tin oil barrel is full of gasoline. After pouring out (2/3) of the gasoline in the barrel, there are 24 liters left. The bottom area of the oil barrel is 12 square decimeters. What is the height of the oil barrel in decimeters ?
一个圆柱形铁皮油桶，装了满桶汽油，把桶里的汽油倒出(2/3)后，还剩24升，油桶底面积是12平方分米，油桶的高度是多少分米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">24 / (1/3) / 12</gadget>
<output>6</output>

<result>6</result>