A piece of rectangular paper is 19 cm long and 12 cm wide. If the largest square is cut off, what is the circumference of a small rectangular piece of paper left in centimeters?
一张长方形的纸片，长是19厘米，宽是12厘米，剪去一个最大的正方形，剩下一个小长方形纸片的周长是多少厘米．
<gadget id="calculator">19 - 12</gadget>
<output>7</output>

<gadget id="calculator">7 + 12</gadget>
<output>19</output>

<gadget id="calculator">19 * 2</gadget>
<output>38</output>

<result>38</result>