A cuboid is divided into two identical small cuboids, and then assembled into a cube. The surface area of this cube is 72 square centimeters. What is the surface area of the original cuboid?
一个长方体分割成两个相同的小长方体，然后拼成一个正方体，这个正方体的表面积是72平方厘米，原长方体的表面积是多少．
<gadget id="calculator">72 / 6</gadget>
<output>12</output>

<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">24 - 12</gadget>
<output>12</output>

<gadget id="calculator">72 + 12</gadget>
<output>84</output>

<result>84</result>