60 cm long iron wire (not counting the joints) is used to form a cube frame. What is the edge length of this cube frame?
围成一个正方体框架用了60厘米长的铁丝(接头处不计)，这个正方体框架的棱长是多少？
<gadget id="calculator">60 / 12</gadget>
<output>5</output>

<result>5</result>