A cuboid food box is 20 cm long, 5 cm wide, and 10 cm high. How many square centimeters of paper is needed to make this cuboid food box?
一个长方体的食品盒，长20厘米，宽5厘米，高10厘米．做这个长方体的食品盒至少要多少平方厘米纸？
<gadget id="calculator">20 * 5</gadget>
<output>100</output>

<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<gadget id="calculator">100 + 200 + 50</gadget>
<output>350</output>

<gadget id="calculator">350 * 2</gadget>
<output>700</output>

<result>700</result>