I was wondering how much BM my baby has consumed since birth (he's 6 months), so I sat down, and figured out that in 6 months, he's consumed about 36 gallons!! for us!
I figured he consumes about 800 ml per day (or 27 oz.), which is normal. Multiply that by 7, and it's 1.5 gallons a week, which is 6 gallons a month. (Actually, I suck at math, so I'm quite happy that I came up with these stats).