Two squares of the same size are put together to form a rectangle, and the perimeter is 14 cm less than the sum of the perimeters of the original two squares. What is the perimeter of the original square in centimeters?
两个同样大小的正方形，拼成一个长方形后，周长比原来两个正方形的周长和减少14厘米，原来一个正方形的周长是多少厘米？
<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<result>28</result>