The sum of the lengths of the sides of a cuboid is 120 cm, and the ratio of its length, width, and height is 3:1:1. What is the volume of the cuboid in cubic centimeters?
一个长方体的棱长总和是120厘米，它的长、宽、高的比是3：1：1，这个长方体的体积是多少立方厘米？
<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<gadget id="calculator">3 + 1 + 1</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">30 * (3/5)</gadget>
<output>18</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">30 * (1/5)</gadget>
<output>6</output>

<gadget id="calculator">18 * 6 * 6</gadget>
<output>648</output>

<result>648</result>