A piece of iron wire can be folded into a cuboid frame with a length of 4 meters, a width of 3 meters and a height of 2 meters. If this wire is used to fold a cube, what is the length of its sides?
一根铁丝可以折成一个长4米，宽3米，高2米的长方体框架，如果用这根铁丝折成一个正方体，它的棱长是多少米？
<gadget id="calculator">3 + 2 + 4</gadget>
<output>9</output>

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

<gadget id="calculator">9 * (1/3)</gadget>
<output>3</output>

<result>3</result>