Check out muhteşem yüzyıl... episodes are between 100-120 min.
Also episode numbers are insane...
Season 1: 24 Episodes
Season 2: 39 Episodes
Season 3: 40 Episodes
Season 4: 35 Episodes
More calculations.
A US serial takes around 40 minutes, and around 12 episodes per season.
So, if we would go by the US standarts it would be equal 36 years if they wanted to shoot Muhteşem Yüzyıl.
This is the thing which reduces overall quality of the Turkish serials. Long air times and many episodes mean much commercials = more $$$....
So, if TRT goes by private TV's standarts, they will eventually drop the quality...but there is chance that they can maintain the overall quality as it's the state TV, they don't have a lust for the money. (not talking about the government. )