Sam’s Burger Shack has a drive through window with a single server who takes orders from an intercom and is the cashier. The window operator is assisted by other employees who prepare the orders. Customers arrive at the ordering station every 4.7 minutes. The window operator can process a customer in 1.8 minutes. Determine the average length of the waiting line. In other words, on average there are X people standing in line. It is OKAY not to have a whole number.