Use two cuboids with a length of 5 cm, a width of 3 cm and a height of 4 cm to form a large cuboid. What is the largest square centimeter of the surface area of this large cuboid?
用两个长5cm、宽3cm、高4cm的长方体拼成一个大的长方体．这个大长方体的表面积最大是多少平方厘米？
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">15 + 20 + 12</gadget>
<output>47</output>

<gadget id="calculator">47 * 2 * 2</gadget>
<output>188</output>

<gadget id="calculator">3 * 4 * 2</gadget>
<output>24</output>

<gadget id="calculator">188 - 24</gadget>
<output>164</output>

<result>164</result>