Dig a tunnel with a length of 165 meters, and two engineering teams, A and B, will construct it simultaneously from both ends. It will take 15 days to dig through this tunnel. Team A digs 6 meters forward every day, how many meters does Team B dig forward every day?
挖一条长165米的隧道，由甲、乙两个工程队从两端同时施工．挖通这条隧道要15天．甲队每天向前挖6米，乙队每天向前挖多少米？
<gadget id="calculator">165 / 15</gadget>
<output>11</output>

<gadget id="calculator">11 - 6</gadget>
<output>5</output>

<result>5</result>