Grandma Zhang exercises her body and runs 5 laps around a square playground with a side length of 50 meters every day. How many meters does she run every day?
张奶奶锻炼身体，每天绕着边长为50米的正方形操场跑5圈，她每天跑多少米？
<gadget id="calculator">50 * 4 * 5</gadget>
<output>1_000</output>

<result>1_000</result>