The sum of the sides of a cuboid is 72 cm, and the ratio of length, width, and height is 3:2:4. Find the volume of this cuboid.
一个长方体的棱长之和是72厘米，长、宽、高的比是3：2：4，求这个长方体的体积．
<gadget id="calculator">3 + 2 + 4</gadget>
<output>9</output>

<gadget id="calculator">72 / 4 / 9</gadget>
<output>2</output>

<gadget id="calculator">2 * 3 * 2 * 2 * 2 * 2 * 2</gadget>
<output>192</output>

<result>192</result>