A box of biscuits is 25 centimeters long, 15 centimeters wide and 10 centimeters high. Now it is necessary to stick label paper around it. What is the area of the label paper in square centimeters?
一盒饼干长25厘米，宽15厘米，高10厘米，现在要在它的四周贴上商标纸，商标纸的面积是多少平方厘米？
<gadget id="calculator">25 + 15</gadget>
<output>40</output>

<gadget id="calculator">40 * 2 * 10</gadget>
<output>800</output>

<result>800</result>