6.4. An order for 50 of a product is processed on work centers A and B. The setup time on A is 30 minutes, and the run time is 4 minutes per piece. The setup time on B is 20 minutes, and the run time is 3 minutes per piece. Wait time between the two operations is 6 hours. The move time between A and B is 50 minutes. Wait time after operation B is 5 hours, and the move time into stores is 3 hours. There is no queue at any workstation. Calculate the total manufacturing lead time for the order.