Problem is to compare different cereals which have different size recommended servings. For example, 8 grams of sugar per 1/2 cup compared to 9 grams of sugar per 2/3 cup compared to 7 grams of sugar per 1/4 cup etc... I need to know the formula to determine how many grams of sugar per X (x being a constant serving size, regardless of label, for instance grams of sugar per 1 cup for each different cereal) or the formula to convert all the grams of sugar to grams per one ounce of cereal (I think) Can someone help? Thanks!