A circular lawn is 80 meters in diameter. Liu Qiang runs around the lawn 5 times every morning. How many meters does he run around the lawn every day?
一个圆形草坪直径80米，刘强每天早晨绕草坪跑5周，他每天绕草坪跑多少米？
<gadget id="calculator">3.14 * 80 * 5</gadget>
<output>1_256</output>

<result>1_256</result>