The avocado would be digested in the small intestine.
The food is broken down by enzymes that are produced by cells in the lining of the intestines, aided by hydrochloric acid and bile from the liver. These substances are used to break down fats into fatty acids and more-soluble compounds called monoglycerides and cholesterol esters, respectively. Proteins into amino acids. Lipids (fat) into glycerol and fatty acids.