In most MMO's if you do a /play it gives you time played in days, hours, minutes.
If that is following a similar trend to every single MMO I've ever played, then a day is 24 hours of total playtime. So ~37.5 hours per person. Obviously some have probably played far more than that (50+ days) while some have probably only tried it out for an hour or two and figured it wasn't for them.
I tend to find MMO's far more economical, affordable and addictive than all other gametypes. In my last MMO, I logged in well over 90 days played in less than a year. So well over 2200+ hours for a measly 10 dollars a month. A bargain. What's amusing is that people that invest significant time into a F2P MMO, end up spending far more per month for their "free" MMO.
Of course, as you can see by my time played, addiction has its costs. Hence, I'm avoiding MMO's for the time being.
And I'm not even one of the MMO types that REALLY plays them a LOT.
Regards,
SB