The school flower pond is a rectangle with a length of 25 meters and a width of 15 meters. Xiaohong walked along the flower pond twice. How many meters did she walk?
学校花池是一个长方形，长25米，宽15米，小红沿着这个花池走了2圈，她走了多少米？
<gadget id="calculator">25 + 15</gadget>
<output>40</output>

<gadget id="calculator">40 * 2 * 2</gadget>
<output>160</output>

<result>160</result>