The school playground is a rectangle with a length of 125 meters and a width of 75 meters. Xiao Ming ran 5 laps along the playground. How many kilometers did he run in total?
学校的操场是长125米，宽75米的长方形，小明沿着操场跑了5圈，他一共跑了多少千米？
<gadget id="calculator">125 + 75</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>