Convert from avogram to uncia [Rome]

Unit Definition (avogram)
The avogram is a unit of mass, equal to 1 gram divided by the Avogadro number.

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.