Zhang Qiang ran 3 laps on the 400-meter circular runway of the Huanglong Sports Center Gymnasium. How many meters did he run?
黄龙体育中心体育馆环形跑道一圈400米，张强跑了3圈，他跑了多少米？
<gadget id="calculator">400 * 3</gadget>
<output>1_200</output>

<result>1_200</result>