A cuboid food box is 15 cm long, 12 cm wide, and 20 cm high. If a circle of trademark paper is pasted around it (not above and below), how many square centimeters should the area of this trademark paper be at least?
一个长方体的食品盒，长15厘米，宽12厘米，高20厘米．如果围着它贴一圈商标纸(上下面不贴)，这张商标纸的面积至少要多少平方厘米？
<gadget id="calculator">15 * 20</gadget>
<output>300</output>

<gadget id="calculator">12 * 20</gadget>
<output>240</output>

<gadget id="calculator">300 + 240</gadget>
<output>540</output>

<gadget id="calculator">540 * 2</gadget>
<output>1_080</output>

<result>1_080</result>