Total per day, I do not know. It depends on when I get up and when I get to bed. For me there are no exact numbers per day, It all depends how often you eat the protein, what kind of protein, awake hours and so on. (numbers are from meat/powder and not from carbs>/pasta/rice etc..I do not count them)
I shoot for 50g for breakfast, then 35g 3 hoiurs later, then 40g for lunch(before workout), 20g post workout(whey) and 30 minutes later 60g(from meat). 3 hours later 35-40g, then for dinner 35-50g, after that 30-40g and last meal of the day before bedtime is 50g kasein(about 45g protein). I think it is pointless to focus on an exact number to eat per day. It's pretty obvious that someone taking 1 gram every other hour then gp massive for one meal with something like 250g probably wont gain much, more likly the opposite(muscle loss).