Grandma Zhang exercises her body and runs 5 laps around a square playground with a side length of 200 meters every day. How many kilometers does she run every day?
张奶奶锻炼身体，每天绕着边长为200米的正方形操场跑5圈，她每天跑多少千米？
<gadget id="calculator">5 / 1_000</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">200 * 4 * (1/200)</gadget>
<output>4</output>

<result>4</result>