Could anyone help me understand what this means in practice, at scale? I keep doing the math and getting numbers either way to small or way too big. If each use

Could anyone help me understand what this means in practice, at scale? I keep doing the math and getting numbers either way to small or way too big. If each users streams 200MB over a 10 minute session, and they arrive on the site uniformly distributed over time (false premises, I know), how much would 1,000,000 sessions a month cost? I get confused by terabits and terabytes and how "per second" bandwidth metering actually works. I keep getting to the conclusion that for $1,000,000 you could handle 16,200,000,000 sessions per month, which is more traffic than phub gets and less money than I assume they spend.