If an iron wire can be folded into a cuboid frame model with a length of 6 decimeters, a width of 4 decimeters, and a height of 2 decimeters, then this wire can be folded into a cube frame model, what is the length of its sides?
如果一根铁丝可以折成长6分米，宽4分米，高2分米的长方体框架模型，那么用这根铁丝折成一个正方体框架模型，它的棱长是多少分米．
<gadget id="calculator">6 + 2 + 4</gadget>
<output>12</output>

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

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

<result>4</result>