Cut a cylinder of wood into the largest cone, the volume of the cut part is 9dm**3, then what is the volume of this cylinder of wood? what is the correct formula
把一个圆柱体木料削成一个最大的圆锥，削去部分的体积是9dm**3，那么这段圆柱体木料的体积是多少？正确的算式是多少
<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">9 / (2/3)</gadget>
<output>27/2 = around 13.5</output>

<result>27/2 = around 13.5</result>