Use two cuboids with a length of 7 cm, a width of 5 cm and a height of 3 cm to form a large cuboid. What is the minimum surface area of the cuboid in square centimeters?
用两个长7厘米，宽5厘米，高3厘米的长方体拼成一个大长方体，拼成的长方体的表面积最小是多少平方厘米
<gadget id="calculator">7 * 5</gadget>
<output>35</output>

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

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

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

<gadget id="calculator">71 * 2 * 2</gadget>
<output>284</output>

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

<gadget id="calculator">284 - 70</gadget>
<output>214</output>

<result>214</result>