Well, I know that fat provides 9 calories per gram, so maybe if you take out the fat, you could weigh it and then, remove those calories from the entire thing (not just per serving, obviously).
First goal: under 180:
Second goal: 175 or below:
Third goal: 168 (no longer overweight):
Fourth goal: 160 or below:
Final goal: 145-155 (not sure if this will ever happen):