Two identical cuboids are 9 cm long, 5 cm wide, and 3 cm high. Put together a cuboid with the largest surface area, what is the surface area of this cuboid in square centimetres?
两个完全相同的长方体，长9厘米，宽5厘米，高3厘米．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平方厘米．
<gadget id="calculator">9 * 5</gadget>
<output>45</output>

<gadget id="calculator">9 * 3</gadget>
<output>27</output>

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

<gadget id="calculator">45 + 27 + 15</gadget>
<output>87</output>

<gadget id="calculator">87 * 2 * 2</gadget>
<output>348</output>

<gadget id="calculator">5 * 3 * 2</gadget>
<output>30</output>

<gadget id="calculator">348 - 30</gadget>
<output>318</output>

<result>318</result>