I need to convert a recipe from grams to ounces or cups. I also have to divide the recipe for an appropriate serving size. For example, a recipe calls for 300 grams of flour and it serves 60 people. I am thinking if I want the recipe to serve 6, I'm dealing with 1/4 c to 1/3 c flour, but how do I know what's correct? Is there an appropriate way to do this type of conversion and subsequent division?