A rectangular piece of paper is folded into thirds to form a square. The perimeter of the square is 40 cm. What is the perimeter of the original rectangle in cm?
一个长方形的纸对折成三等份后变成了一个正方形，正方形的周长是40厘米，那么原来长方形的周长是多少厘米．
<gadget id="calculator">40 / 4</gadget>
<output>10</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<gadget id="calculator">30 + 10</gadget>
<output>40</output>

<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<result>80</result>