Two engineering teams, A and B, are simultaneously constructing and digging a tunnel. Team A digs 125 meters per month, Team B digs 275 meters per month, and it will be opened in 14 months. How many meters is this tunnel?
甲乙两个工程队同时施工开凿一条隧道．甲队每月天凿125米，乙队每月开凿275米，14个月开通．这条隧道长多少米？
<gadget id="calculator">125 + 275</gadget>
<output>400</output>

<gadget id="calculator">400 * 14</gadget>
<output>5_600</output>

<result>5_600</result>