Convert from as, ass [Northern Europe] to avogram

Unit Definition (as, ass [Northern Europe])
The as, ass [Northern Europe] is a traditional unit of mass for gold and silver, used in most of northern Europe but not in England. The unit varied in size from about 48 to 58 milligrams (0.75 to 0.90 English grain).

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