A cylinder and a cone have the same base and height, and the difference between their volumes is 60 cubic centimeters, what is the volume of the cone in cubic centimeters?
一个圆柱和一个圆锥等底等高，他们的体积差为60立方厘米，那么圆锥的体积是多少立方厘米．
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">60 / 2</gadget>
<output>30</output>

<result>30</result>