The bottleneck in the entire processing system with multiple steps is the place with the lowest capacity. It constrains the maximum possible flow rate of the system and therefore defines the capacity of the whole system. You might have other stations that have a higher capacity, but the capacity of the whole system is constrained at the bottleneck.

Tinyfield Labs has a bottleneck station that has one machine working on a NON-batched process. It takes this machine on average 5 hours to process a job. That is, the capacity of Tinyfield Labs is 4.8 jobs per day. Tinyfield decides to buy 89 extra (exactly the same) machines at this station; however this station remains as the bottleneck process. A job arriving at this station will be processed by only one of the identical parallel machines and can be processed by any one of them that is available. What is Tinyfield's daily capacity with 1 + 89 identical parallel machines at this bottleneck station? (Jobs per day; one decimal place.)