Vacation$$ Inns, a chain of hotels operating in the southeastern region of the$$ U$.$S$.,$ uses a$$ toll$-$free telephone number to take reservations for all of its hotels. An average of $18$ calls are received per hour. The probability distribution that describes the arrivals is unknown. Over a period of time it is determined that the average caller spends $5$ minutes on hold waiting for service. Find the average number of callers in the queue by using$$ Little's Law.

Part $2$

The average number of callers in the queue is enter your response here callers. $($Round your response to one decimal$$ place.$)$