Additional Algo $16-12$ Queues when Demand and Service Rates Are Variable $-$ Multiple Servers

At the stadium, there are eight lines for arriving customers, each staffed by a single worker. The arrival rate for customers is $102$ per hour and each customer takes $($on average$)4$ minutes for a worker to process. The coefficient of variation for arrival time is $1\mathrm{.}1$ and the coefficient of variation for service time is $1\mathrm{.}4.$

On average, how many customers will be waiting in the queue?

Note: Round your answer to $3$ decimal places.