A small box of candies is 20 cm long, 6 cm wide, and 5 cm high. To pack four boxes of candies into a cuboid, what is the minimum area of wrapping paper needed?
一个小盒糖果长20厘米，宽6厘米，高5厘米．把四盒糖果包装成一个长方体，至少需要多大面积的包装纸．
<gadget id="calculator">5 * 4 * 5 * 4</gadget>
<output>400</output>

<gadget id="calculator">5 * 4 * 6</gadget>
<output>120</output>

<gadget id="calculator">400 + 120 + 120</gadget>
<output>640</output>

<gadget id="calculator">640 * 2</gadget>
<output>1_280</output>

<result>1_280</result>