A rectangular green belt with a length of 125 meters and a width of 24 meters, how many meters should it take to walk around the green belt?
一条长方形绿化带，长是125米，宽是24米，沿着绿化带走一圈，至少多少米？
<gadget id="calculator">125 + 24</gadget>
<output>149</output>

<gadget id="calculator">149 * 2</gadget>
<output>298</output>

<result>298</result>