Put two identical cuboids whose length, width, and height are 9 cm, 7 cm, and 4 cm respectively to form a large cuboid. What is the minimum surface area of this large cuboid?
把两个长、宽、高分别是9厘米、7厘米、4厘米的相同长方体，拼成一个大长方体，这个大长方体的表面积最少是多少？
<gadget id="calculator">9 * 7</gadget>
<output>63</output>

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<gadget id="calculator">63 + 36 + 28</gadget>
<output>127</output>

<gadget id="calculator">127 * 2 * 2</gadget>
<output>508</output>

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

<gadget id="calculator">508 - 126</gadget>
<output>382</output>

<result>382</result>