The perimeter of a piece of rectangular paper is 6 cm. Cut it from the middle to form two squares of the same size. What is the perimeter of each square?
一张长方形纸的周长是6厘米，从正中间剪开恰好成两个一样大小的正方形，每个正方形的周长是多少．
<gadget id="calculator">6 / 6</gadget>
<output>1</output>

<gadget id="calculator">1 * 4</gadget>
<output>4</output>

<result>4</result>