A cuboid food box, the bottom is a square with a side length of 20 cm and a height of 15 cm. Stick label paper around it, what is the minimum area of the label paper in square centimeters?
一个长方体食品盒，底面是边长20厘米的正方形，高15厘米．在它的四周贴上商标纸，商标纸的面积至少是多少平方厘米？
<gadget id="calculator">20 * 4 * 15</gadget>
<output>1_200</output>

<result>1_200</result>