Cut a cube with an edge length of 6 into several small cubes with the same edge length as an integer, if the sum of the surface areas of these small cubes is twice the surface area of the large cube before cutting, then the edge of the cut cubes How long is it?
将一个棱长为6的正方体切割成若干个相同的棱长为整数的小正方体，若这些小正方体的表面积之和是切割前的大正方体的表面积的2倍，则切割成的小正方体的棱长是多少．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<result>3</result>