We started off with 342 units of, let’s say, maltose. We added 18 units of water from the body and we ended up with two units of glucose at 180 each – equals 360 units. So, our original 342 units of carbohydrate ended up as 360 units of carbohydrate after being broken down by the body. This added 5% in mass and, therefore, if we started with 100 grams of carbohydrate, we end up with 105 grams of carbohydrate. If we assume that carbohydrates have four calories per gram, we started off with 400 calories of carbohydrate (maltose) and ended up with 420 calories of carbohydrate (glucose).