The surface area of a cuboid is 4000cm**2. Cutting this cuboid into two equal cubes is exactly two equal cubes. If two such cuboids are assembled into a cuboid, what is the maximum surface area of the cuboid?
一个长方体表面积是4000cm**2，把这个长方体平均切成两块正好是两个相等的正方体，若把两个这样的长方体拼成一个长方体，这个长方体的表面积最多是多少．
<gadget id="calculator">4_000 * 2</gadget>
<output>8_000</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<gadget id="calculator">4_000 / 10</gadget>
<output>400</output>

<gadget id="calculator">400 * 2</gadget>
<output>800</output>

<gadget id="calculator">8_000 - 800</gadget>
<output>7_200</output>

<result>7_200</result>