There is a cylinder and a cone with the same base and height. Their total volume is 60 cubic decimeters. What is the volume of this cylinder?
现有等底等高的圆柱和圆锥各一个，它们的体积一共是60立方分米，这个圆柱的体积是多少．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">15 * 3</gadget>
<output>45</output>

<result>45</result>