The school playground is 350 meters per lap, and Uncle Wang runs 12 laps around the playground every day. How many meters does Uncle Wang run every day?
学校操场每圈350米，王叔叔每天围着操场跑12圈．王叔叔每天跑多少米？
<gadget id="calculator">350 * 12</gadget>
<output>4_200</output>

<result>4_200</result>