If there are four servings in a packaged food and someone eats the whole package, they need to multiply the calories per serving by four to see how much energy they have consumed.
Calories are the next fact that the nutrition label states. Calories measure how much energy someone gets from a serving of food or drink. If there are four servings in a packaged food and someone eats the whole package, they need to multiply the calories per serving by four to see how much energy they have consumed.