The playground of Guangming Primary School is 40 meters long, and its width is 5 meters shorter than its length. Xiao Ming ran 2 laps around the playground, how many meters did he run in total?
光明小学操场的长是40米，宽比长短5米．小明绕着操场跑了2圈，他一共跑了多少米？
<gadget id="calculator">40 - 5</gadget>
<output>35</output>

<gadget id="calculator">40 + 35</gadget>
<output>75</output>

<gadget id="calculator">75 * 2 * 2</gadget>
<output>300</output>

<result>300</result>