The volume of a cylinder is 60 cubic meters. If its height is tripled and its bottom diameter is changed to the original (1/3), what is the volume after the modification?
一个圆柱体体积是60立方米，如果把它的高改为原来的3倍，底面直径改为原来的(1/3)，那么改动后的体积是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">60 * (1/3)</gadget>
<output>20</output>

<result>20</result>