If the radius of the base of a cone is increased to 3 times and the height is reduced to 1/3 of the original, then the volume of the current cone is how many times the volume of the original cone.
一个圆锥的底面半径增加到原来的3倍，高缩小到原来的(1/3)，则现在的圆锥体积是原来圆锥体积的多少倍．
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">9 * (1/3)</gadget>
<output>3</output>

<result>3</result>