If the difference between the volumes of a cylinder and a cone with the same base and height is 40cm**3, what is the volume of the cylinder?
等底等高的圆柱与圆锥体积相差40cm**3，则圆柱体积是多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">40 / (2/3)</gadget>
<output>60</output>

<result>60</result>