The equipment factory in the new area made a rectangular parallelepiped frame with a 120 cm long iron wire. The ratio of the length, width and height of this rectangular parallelepiped is 3:2:1. What is the volume of this rectangular parallelepiped?
新区器材厂用一根长120厘米的铁丝做成一个长方体框架，这个长方体长宽高的比是3：2：1，这个长方体的体积是多少立方厘米？
<gadget id="calculator">3 + 2 + 1</gadget>
<output>6</output>

<gadget id="calculator">120 / 4 / 6</gadget>
<output>5</output>

<gadget id="calculator">5 * 3 * 5 * 2 * 5 * 1</gadget>
<output>750</output>

<result>750</result>