There is a cuboid wood with a volume of 720 cubic decimeters. If after a section is cut off, what is left is exactly a cube with a side length of 6 decimeters, how many square decimeters is the surface area of the original cuboid wood?
有一块长方体木料，体积为720立方分米．如果截下一段后，剩下的正好是一个棱长为6分米的正方体，原来长方体木料的表面积是多少平方分米？
<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">720 / 36</gadget>
<output>20</output>

<gadget id="calculator">6 * 4 * 20</gadget>
<output>480</output>

<gadget id="calculator">6 * 6 * 2</gadget>
<output>72</output>

<gadget id="calculator">480 + 72</gadget>
<output>552</output>

<result>552</result>