Divide a cuboid with a length of 9 meters, a width of 6 meters and a height of 4 meters into 3 small cuboids. What is the maximum increase in the surface area in square meters?
把一个长9米，宽6米，高4米的长方体分割成3个小长方体，表面积最多增加多少平方米．
<gadget id="calculator">9 * 6 * 4</gadget>
<output>216</output>

<result>216</result>