If the length and width of a cuboid are tripled and the height remains the same, how many times its original volume will be increased.
长方体的长和宽变为原来的3倍，高不变，则它的体积变为原来的多少倍．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>