The radius of the base of the cone is increased by 3 times, the height is reduced by 3 times, and the volume is increased by how many times
圆锥的底面半径扩大3倍，高缩小3倍，体积扩大多少倍
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<result>3</result>