A rectangular pond is 65 meters long and 55 meters wide. There is a path around it, what is the total length of the path in meters?
一个长方形池塘，长65米，宽55米．它的四周有一条小路，小路的全长是多少米．
<gadget id="calculator">65 + 55</gadget>
<output>120</output>

<gadget id="calculator">120 * 2</gadget>
<output>240</output>

<result>240</result>