Those numbers seem very peculiar:
> Each ounce of beer contains 16 latent calories, but extracts 1,036 calories (6,216 cal. per 6 oz. portion) in the temperature normalizing process.
I think it's muddling food calories (which are really mislabelled kilocalories) and temperature calories (which aren't). So that 16 should be 16000.
This is why you do this in joules!