A piece of iron wire can be made into a cuboid frame with a length of 6 cm, a width of 5 cm, and a height of 4 cm. If this wire is used to make a cube frame, how many centimeters is the side length of the cube?
一根铁丝可以做成一个长6cm、宽5cm、高4cm的长方体框架．如果用这根铁丝做一个正方体框架，那么这个正方体的棱长是几厘米？
<gadget id="calculator">6 + 5 + 4</gadget>
<output>15</output>

<gadget id="calculator">4 / 12</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15 * (1/3)</gadget>
<output>5</output>

<result>5</result>