question

I have frozen hamburger patties, and they say on the pkg that they are 310 cals, 25g fat. is this what i put into fitday, or will some of that burn off in the grill? i know when i grill it LOOKS like grease/fat are just pouring off, but is that the case? I am trying to keep my cals within reason and i don't want to ruin it with a hamburger.

thanks