There is a wooden block in the shape of a cuboid, the length, width, and height are 9 cm, 3 cm, and 6 cm, respectively. Now cut it into three rectangles with exactly the same shape and size. After cutting into three pieces, what is the maximum increase in the surface area of these three pieces compared with the surface area of the original wood piece?
有一个长方体形状的木块，长、宽、高分别为9厘米、3厘米、6厘米．现在将它切割成形状和大小完全一样的三块长方形，切成三块后，这三块的表面积与原来木块的表面积相比最多增加多少平方厘米？
<gadget id="calculator">9 * 6 * 4</gadget>
<output>216</output>

<result>216</result>