Overall, the process is equipped $160$ robots and $3000$ employees. The process produces some $500$ vehicles each week. It takes a car about $3-5$ days to move from the beginnig of the process to the end. The plant works two$-$shifts of eight hours per day, and it is open $5$ days per week. How many cars are you likely to encounter at any given time as work in process inventory $($ use Little's Law $)$