A cuboid whose length, width, and height are 11, 9, and 7 (cm) are piled up by several cubes with a side length of 1 cm, and its surface is completely painted with red, and then the cube with only one side of red is taken out, Then stack the taken out cubes into a solid cuboid with different length, width and height. Find the maximum surface area of this solid cuboid.
由棱长为1cm的若干个立方体堆成一个长、宽、高分别是11，9，7(cm)的长方体，将它的表面上全部涂上红色，然后将只有一面是红色的立方体取出，再将取出的立方体堆成一个长宽高都不同的实心长方体．求这个实心长方体表面积的最大值．
<gadget id="calculator">11 - 2</gadget>
<output>9</output>

<gadget id="calculator">9 - 2</gadget>
<output>7</output>

<gadget id="calculator">9 * 7 * 2</gadget>
<output>126</output>

<gadget id="calculator">7 - 2</gadget>
<output>5</output>

<gadget id="calculator">9 * 5 * 2</gadget>
<output>90</output>

<gadget id="calculator">7 * 5 * 2</gadget>
<output>70</output>

<gadget id="calculator">126 + 90 + 70</gadget>
<output>286</output>

<gadget id="calculator">1_116 - 286</gadget>
<output>830</output>

<result>830</result>