A 1,330-meter-long tunnel was to be dug for the Yungui high-speed railway. In order to meet the construction schedule, two engineering teams, A and B, dug it from opposite ends at the same time. Team A digs 15 meters a day, and Team B digs 20 meters a day. At this rate, how many days will it take for the tunnel to pass?
云桂高速铁路要挖一条1330米长的隧道，为了赶工期，分别由甲乙两个工程队同时从两头相向开凿．甲队每天挖15米，乙队每天挖20米，照这样的速度，多少天后这条隧道可以挖通？
<gadget id="calculator">15 + 20</gadget>
<output>35</output>

<gadget id="calculator">1_330 / 35</gadget>
<output>38</output>

<result>38</result>