A rectangular flower bed is 28 meters long and 11 meters wide. Xiaojun ran 2 laps around the flower bed, how many meters did he walk in total?
一个长方形花坛的长是28米，宽是11米．小军绕着这个花坛跑了2圈，一共走了多少米？
<gadget id="calculator">28 + 11</gadget>
<output>39</output>

<gadget id="calculator">39 * 2 * 2</gadget>
<output>156</output>

<result>156</result>