Use three small cuboids with a length of 7 cm, a width of 5 cm, and a height of 3 cm to form a cuboid with the largest surface area. What is the surface area of this cuboid?
用三个长7厘米，宽5厘米，高3厘米的小长方体，拼成一个表面积最大的长方体，这个长方体的表面积是多少？
<gadget id="calculator">7 * 5</gadget>
<output>35</output>

<gadget id="calculator">7 * 3</gadget>
<output>21</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">35 + 21 + 15</gadget>
<output>71</output>

<gadget id="calculator">71 * 2 * 3</gadget>
<output>426</output>

<gadget id="calculator">3 * 5 * 4</gadget>
<output>60</output>

<gadget id="calculator">426 - 60</gadget>
<output>366</output>

<result>366</result>