Use two iron wires of the same length to form a frame of the largest cuboid and a largest cube respectively. The length, width, and height of this cuboid frame are 6dm, 5dm, and 4dm respectively, so how many decimeters is the edge length of this cube?
用同样长的两根铁丝分别围成一个最大的长方体和一个最大的正方体的框架．这个长方体框架长、宽、高分别是6dm、5dm、4dm，那么这个正方体的棱长是多少分米？
<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>