If you asked me what salary does a vice-president make, I'd be like, "Um...wow, look at the time, would you? I gotta go!" (My way of saying, "I honestly have NO idea.")
If you eat 100 calories and it takes the body 100 calories worth of energy to digest that, it's net-zero, and big dieting win. Some foods that get close to that mark and will help hit weight loss goals.