Contrary to popular opinion, Australians are not "...a dwarf bastard convict race"

We're discussing what makes a "chick drink" and I came up with the following equation.

(num of non-alcoholic ingredients) / (num of alcoholic ingredients) = Num

If Num is greater than 1 than it's a "chick drink" otherwise you're fine. Also note that ice/water does not count as an ingredient.