Felix is correct because when purchasing 5 1L bottles, all your getting is 5L. When purchasing 16 cans (2 pks.), you get 5.28L. To get this answer you need to know how many mL there are in 8 cans. You need to multiply 330 by 8 and you get 2,640mL which in turn comes out as 2.64L. To find the amount for both pks. you need to multiply 2,640 by 2 to get 5,280 mL which in turn comes out as 5.28L.
Hope this helps.