If the radius of the base of a cylinder is increased by 3 times and the height is reduced to 1/3 of the original, what is the volume
一个圆柱的底面半径扩大3倍，高缩小到原来的(1/3)，则体积多少
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<result>3</result>