If two identical squares are put together to form a rectangle, the perimeter is 8 centimeters less than the sum of the perimeters of the original two squares. What is the perimeter of each small square in centimeters?
两个相同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总和少8厘米，原来每个小正方形的周长是多少厘米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<result>16</result>