The daily consumption is 8*177.441 milliliters = 1,419.528 mL. The weekly consumption is 7*1,419.528 mL = 9,936.696 mL. 1 liquid ounce = 29.574 mL. 1 can = 25 oz = 25*29.574 mL = 739.350 mL. The number of cans per week == 13.44. ANSWER. 14 cans is enough. 13 cans is below the required volume.