A rectangular playground is 140 meters long and 60 meters wide. Xiao Ming runs 5 laps around the playground. How many kilometers did he run?
一个长方形的操场长是140米，宽是60米，小明绕着这个操场跑5圈，跑了多少千米？
<gadget id="calculator">140 + 60</gadget>
<output>200</output>

<gadget id="calculator">5 / 1_000</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">200 * 2 * (1/200)</gadget>
<output>2</output>

<result>2</result>