On days that I am not as busy as usual, I usually watch 4-6, but on my busier days usually about 2, 3 at most.
I average about 2 or 3 on a normal day.
Two or three. Depends on my time.
typical days = 0 episodes

Rare days = 8 episodes
Typically, one or two. When I'm lucky/don't mind losing sleep/can't stop marathoning due to cliffhanger episodes, three or four.
4-5 if I am not having a drama marathon 
when I'm busy I either watch nothing or, if I'm lucky, one episode---two if I'm really lucky. on lax, lazy days when I don't have anything to do or anywhere to be (or I just want to procrastinate on things...) then I can marathon a bit & binge on three to eight eps.
Marathon days - 5
Regular days - 2 or 3
Typically 1-2 episodes. Occasionally 3-5 episodes.
Weekdays/typical/ notsobusy days-2-3 episodes
marathon-I can eatch 10-12 episodes.
Holidays - 5 to 8
School Days - 2 to 3

It also depends on whether I really like the drama or not
Normally 2-3 episodes, but if I'm realllly free then 5-8 episodes :)