He's using mathematics to compute the number of tickets an employee can handle per day, given certain assumptions. Given the data from znpy above, we see that

He's using mathematics to compute the number of tickets an employee can handle per day, given certain assumptions. Given the data from znpy above, we see that nurettin's assumption that the time per ticket is 15 minutes is inconsistent with DO's expectations; instead, the average time spent per ticket should be about 5 minutes.