A cylindrical piece of wood is made into the largest cone, and 12 cubic meters are cut off. What is the volume of the cylinder?
一根圆柱型木料把它做成一个最大的圆锥，削去了12立方米，问圆柱的体积是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 / (2/3)</gadget>
<output>18</output>

<result>18</result>