What does Leviticus 3:10 mean?

The priest will take these fatty pieces and burn them on the altar, on top of the burnt offering that’s already there. It’s a gift to God, and the smell is pleasing to him. Leviticus 3:10 - Modern Text Bible

(The priest’s job is to burn these specific parts as an offering. The burning represents giving the best to God, and the pleasing aroma is a way of saying God accepts the gift.)