If a cuboid with a length of 9 cm, a width of 6 cm and a height of 3 cm is cut into three cuboids of equal volume, what is the maximum increase in the surface area in square centimeters?
一个长9厘米，宽6厘米，高3厘米的长方体，切割成三个体积相等的长方体，表面积最大可增加多少平方厘米．
<gadget id="calculator">9 * 6 * 4</gadget>
<output>216</output>

<result>216</result>