How many calories should you burn if you consume 600 calories daily?

If you only eat 500 calories a day you will lose weight at a very unhealthy speed. You can't live on 500 calories a day forever so as soon as you eat more you will gain it all back. And if you are lets say 250 pounds and ate only 500 calories you would be eating 2300 calories less than you need to maintain your weight. 2300*7 is 16100 less a week that is 4.6 pounds. If you weight less or more than this you may lose more or less pounds. Please visit livestrong.com and click on the daily plate it will help you set goals to lose weight and help you figure out how many calories you can eat a day to burn the amount of fat you want. Dont follow the diet you mentioned or you might hurt yourself.