The nutrition label for a food product shows the total amount of fats in grams. one gram of fat provides nine calories of energy.

one serving of this food from total fats.

Directly on the label, it says there are 110 calories from fat per serving. However, it also says that there are 12 grams of fat, and 12 x 9 = 108. Depending on what your teacher is looking for, the answer could be 108 or 110. You're probably pretty safe going with either as long as you explain your answer.