Convert from drachme to uncia [Rome]

Unit Definition (drachme)
The drachme is a traditional unit of weight in France and Germany, generally between 3.7 and 3.9 grams.

Unit Definition (uncia [Rome])
The uncia is the Roman ounce, equal to about 27.2875 grams of 0.9625 ounce avoirdupois. There were 12 ounces in a Roman pound, and the word uncia means a 12th part; its name gives us the ounce, of course, and also the inch.