The volume of a cone is 12m**3 less than the volume of a cylinder of the same height as it. What is the volume of the cylinder?
一个圆锥的体积比与它等高的圆柱的体积少12m**3，圆柱体的体积是多少．
<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>