Make a cuboid model with a 108 cm long iron wire, and the ratio of length, width and height is required to be 2:3:4. If each side is made of iron sheets to make a tin box, what is the volume of the tin box?
用一条长108厘米的铁丝做成一个长方体模型，要求长、宽、高的比为2：3：4．如果每个面都用铁皮做成铁盒，那么这个铁盒的体积是多少？
<gadget id="calculator">2 + 3 + 4</gadget>
<output>9</output>

<gadget id="calculator">108 / 4 / 9</gadget>
<output>3</output>

<gadget id="calculator">2 * 3 * 3 * 3 * 4 * 3</gadget>
<output>648</output>

<result>648</result>