After cutting a cylindrical wood into the largest cone, the volume is reduced by 18 cubic decimeters. What is the original volume of the wood in cubic decimeters?
把一个圆柱形的木料，削成一个最大的圆锥后，体积减少18立方分米，原来木料的体积是多少立方分米．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">18 / (2/3)</gadget>
<output>27</output>

<result>27</result>