The Jewel Golf Club Company is going to start using a kanban system. They will put the parts needed to make clubs in containers, and the containers will go into the production system. They need to meet a daily demand of 4160 golf clubs. A container holds parts for 78 clubs. Average waiting time of a container of parts during production is 8.1% of one day, and average processing time of one container is 18.9% of one day. What is the minimum number of kanban containers that Jewel needs if they want to maintain at least 7% safety stock? Jewel needs at least containers