Dig out a small square with a side length of 1 cm from the top, bottom, front, back, left and right center of a square with a side length of 6 cm, and find the surface area of the remaining three-dimensional figure.
在棱长为6厘米的正方形的上下，前后，左右的正中位置都挖去一个棱长为1厘米的小正方形，求剩下的立体图形的表面积．
<gadget id="calculator">6 * 6 * 6</gadget>
<output>216</output>

<gadget id="calculator">1 * 1 * 6</gadget>
<output>6</output>

<gadget id="calculator">216 - 6</gadget>
<output>210</output>

<gadget id="calculator">1 * 1 * 6 * 6</gadget>
<output>36</output>

<gadget id="calculator">36 - 6</gadget>
<output>30</output>

<gadget id="calculator">210 + 30</gadget>
<output>240</output>

<result>240</result>