Your patient is beginning a new medication that includes a loading dose. On day one she takes 12 tablets, that contain a total of 1.6 g of medication. On days two - six she takes two tablets daily,...

1. Your patient is beginning a new medication that includes a loading dose. On day
   one
   she takes 12 tablets, that contain a total of 1.6 g of medication. On days
   two - six
   she takes two tablets daily, each tablet contains 200 mg. On days
   seven and eight
   the dose is tapered down to half the daily dose that she took on days 2-6. How many total g will the patient take?

How did they come up with the answer as 4?