A process includes 9 tasks and there are 3 workers. Each task can be assigned to only one worker and each worker must be assigned consecutive tasks. You need to balance the line by assigning the 9 tasks to the 3 workers in such a way to optimize capacity per hour. The time to complete tasks 1 to 9 (in seconds) are as follows:

45, 60, 30, 20, 70, 25, 25, 70, 50

What is the capacity of this process in units per hour?

* Round your answer to one decimal place