I am being serious. He commented the other day that he would post if for me.
Take the lbs of fat lost during a specific period and multiply that by its caloric value. This will equal the total calories lost in storage for a given time frame.
Take the number of calories eaten per day. You can do an average, but a constant will provide you with incredibly accurate results. Multiply that by the given length of time. This is your total calories from food ingested during this period.
Now take the total calories lost from storage and add them with the total calories that you ingested in the time frame. This is how many calories you have effectually used in the given time period
Now take the total calories burned and divide that by the time period. The longer the time period the more accurate.
Have fun with it.