If the diameter of the base of a cone is tripled and the height is reduced to 1/3, what is its volume?
如果把一个圆锥的底面直径扩大到原来的3倍，高缩小为原来的(1/3)，则它的体积是原体积的多少．
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">1 * 3</gadget>
<output>3</output>

<result>3</result>