An MIM$/4$ system has an arrival rate of $18$ customers per hour. Each server has a service rate of $14$ customers per hour.

a$.$ What is the utilization factor for this system? $($Round your answer to $3$ declmal ploces.$)$

Ustization factor

b$.$ If all servers are kept busy, how many services will be completed per hour? $($Round your answer to the nearest whole number.$)$

Services completed per hour