At the bus station, there are seven lines for arriving passengers, each staffed by a single worker. The arrival rate for passengers is $104$ per hour and each passenger takes $($on average$)3\mathrm{.}5$ minutes for a worker to process. The coefficient of variation for arrival time is $1\mathrm{.}4$ and the coefficient of variation for service time is $1\mathrm{.}1$

$($Round your answer to three decimal places.$)$

How much time $($in minutes will an average customer spend in queue?

$]$minutes