A rectangular piece of paper, the length of the long side is 19 cm, after cutting off the largest square, a small rectangular piece of paper is left. What is the perimeter of this small rectangle of paper?
长方形的纸片，长边的长是19厘米，剪去一个最大的正方形后，剩下一个小长方形纸片．这个小长方形纸片的周长是多少．
<gadget id="calculator">19 * 2</gadget>
<output>38</output>

<result>38</result>