You’re not wrong but what did the commenter above meant with “50 hours+/week”? Weeks have three times as many hours. Years also have many more than 218 days.
Anyway I found an official survey saying that 40% of them work more than 50 hours per week (but fewer weeks than regular employees) so I guess it’s not so rare (around one private sector employee in twenty).
Used to work 70h/week on average, like every week of the year. I don't think I ever wworked less than 50h in a week