1 oz. = 28.375 grams divided by 3 ( 3 grams per bowl ) = 9.45 ( 10 ) bowls in an oz.
One pound = 453.6 grams. Using an average of 3 grams/bowl, the pound translates into 151.2 bowls.
At 4-6 bowls/ day, it takes me 37.9 - 25.3 days to schmoke a pound of tobaccy. 8)
With that average, one pound per month or average 12 pounds per year. Hmmmmmm, I need to buy some more. :D