How much does the hourly capacity of the dry-cleaning machine change if tanks are switched only every 4 runs?

info needed:

Task Run Time Capacity Numbers Order taking 1 min 60 items per hour Pre-treatment 1.06 min 56.8 items per hour Dry cleaning 55 min per batch 90 items per hour Pressing 1 min 60 items per hour Packing 0.5 min 120 items per hour Customer pick up 1 min 60 items per hour