And how much per minute was long-distance in 1984? In the early 80s almost all the profit from telephone service was in the long-distance service. For example, 1980: in today's dollars, it was over $1 PER MINUTE to call New York from Los Angeles.
Fun story. The university I went to used to buy long-distance minutes in bulk at 12 cents, sell them at 25 cents, and made a million bucks a year off of students calling home. Now they buy them at 3, sell them at 5, and everyone uses cell phones so there aren't any landlines in the dorms so emergency and "too much ice, class cancelled" notifications and the campus phone directory are a disaster... also, the IT department is out a million bucks a year.