The volume of a cone is 39cm**3 less than that of a cylinder with the same base and height. What is the volume of the cylinder in cm**3?
一个圆锥比与它等底等高的圆柱体积少39cm**3，圆柱的体积是多少cm**3．
<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">39 / (2/3)</gadget>
<output>117/2 = around 58.5</output>

<result>117/2 = around 58.5</result>