After sawing a cube of wood into two identical small cuboids, the surface area of each cuboid is 72cm**2 smaller than the surface area of the original cube, find the area of the original cube.
一个正方体木块，把它锯成两个完全一样的小长方体后，每个长方体的表面积比原正方体表面积小72cm**2，求原正方体的面积．
<gadget id="calculator">72 / 4</gadget>
<output>18</output>

<gadget id="calculator">18 * 2</gadget>
<output>36</output>

<gadget id="calculator">36 * 6</gadget>
<output>216</output>

<result>216</result>