This depends. If one spoon can hold10g of cereal, then five spoons are needed. If a spoon can hold 5 grams of cereal, then a 10 spoon is needed.
Oatmeal is a kind of food with flat shape, the diameter of which is about the same as that of soybean, and the shape is complete. Oats are made into cereal by fine processing, which makes it more convenient to eat and improves the taste, and becomes a popular health food.