After the height of the cuboid is sawed off by 2 cm, the surface area is reduced by 72 cm2, and what remains is exactly a cube. What is the surface area of the original cuboid?
长方体的高锯掉2厘米后，表面积减少了72平方厘米，剩下的恰好是一个正方体，原长方体的表面积是多少？
<gadget id="calculator">72 / 4 / 2</gadget>
<output>9</output>

<gadget id="calculator">9 * 9 * 6</gadget>
<output>486</output>

<gadget id="calculator">486 + 72</gadget>
<output>558</output>

<result>558</result>