Stack 5 "Modern Chinese Dictionary" with a length of 12 cm, a width of 8 cm, and a height of 3 cm. What is the maximum surface area?
把5本长12厘米，宽8厘米，高3厘米的《现代汉语字典》叠放在一起，表面积最大是多少？
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 * 8</gadget>
<output>480</output>

<gadget id="calculator">60 * 3</gadget>
<output>180</output>

<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<gadget id="calculator">480 + 180 + 24</gadget>
<output>684</output>

<gadget id="calculator">684 * 2</gadget>
<output>1_368</output>

<result>1_368</result>