A conical container is filled with gasoline, and after pouring out (5/12) of the gasoline, there are 42 liters left. The bottom area of the oil barrel is 8 square decimeters, how many decimeters is the height of the oil barrel? (barrel wall thickness is not counted)
一个圆锥形的容器盛满汽油，倒出汽油的(5/12)后，还剩42升．油桶的底面积是8平方分米，油桶的高是多少分米？(桶壁厚度不计)
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 - (5/12)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">42 / (7/12)</gadget>
<output>72</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">72 * (3/8)</gadget>
<output>27</output>

<result>27</result>