It is necessary to make a frame for a picture with a length of 30 cm and a width of 26 cm. What is the minimum circumference of the picture frame in centimeters?
要给一幅长30厘米，宽26厘米的画做画框．画框的周长至少是多少厘米？
<gadget id="calculator">30 + 26</gadget>
<output>56</output>

<gadget id="calculator">56 * 2</gadget>
<output>112</output>

<result>112</result>