1/5 of a gallon is roughly around 750ml or 25.6oz.....Like
da fool who said its
da same as 4/5 of a quart is wrong(n its
da top answer?)......Theres 4 quarts in a gallon so how do u get 4/5 of a quart? 4/5 of a quart is
6.4oz...If it was 4/5 of a gallon then 5 quarts would be a gallon (Im just saying)