The food amount that's included in your pet's nutritional plan is an estimate on the total amount of raw food they should be having each day. This amount should be divided by the number of meals they have in a day to give you a meal-feeding amount. For example, if the food amount is 500g, and they have 2 meals a day, that's 250g per meal.
The food amount is based on information like breed, sex, weight, age, and activity level. It's an estimate, and some pets may need slightly less or more.