Xiao Ming runs 5 laps along a square playground with a side length of 100 meters every morning. How many meters does he run every day?
小明每天早上沿边长为100米的正方形操场跑5圈，他每天跑多少米？
<gadget id="calculator">100 * 4 * 5</gadget>
<output>2_000</output>

<result>2_000</result>