In a medical lab, samples need to be prepared before they can be processed by a testing machine. A single technician takes 55 minutes to prepare 200 samples for processing. 3 workers are assigned to this sample preparation stage, and each technician works from 8am to 5pm (taking a 1 hr lunch break during which no work is done). What is the capacity of this processing stage (in samples/day)? Enter your answer rounded to the nearest integer.