A biscuit box in the shape of a cuboid is 30 cm long, 20 cm wide, and 25 cm high. If a week of trademark paper is pasted on its side, what is the minimum area of this trademark paper in square centimeters?
一个长方体形状的饼干盒，长30厘米，宽20厘米，高25厘米．如果在它的侧面贴一周商标纸，这张商标纸的面积至少是多少平方厘米？
<gadget id="calculator">20 * 25 * 2</gadget>
<output>1_000</output>

<gadget id="calculator">30 * 25 * 2</gadget>
<output>1_500</output>

<gadget id="calculator">1_000 + 1_500</gadget>
<output>2_500</output>

<result>2_500</result>