Use iron wire to make a rectangular parallelepiped frame with a length and width of 10 cm and a height of 5 cm. If you want to paste a layer of paper around and on the frame, at least how many square centimeters of paper will you need?
用铁丝做一个长、宽都是10厘米，高5厘米的长方体框架，如果要在这个框架四周以及上面糊一层纸，至少要多少平方厘米纸．
<gadget id="calculator">10 * 10</gadget>
<output>100</output>

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

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

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

<gadget id="calculator">200 * 2</gadget>
<output>400</output>

<gadget id="calculator">400 - 100</gadget>
<output>300</output>

<result>300</result>