Convert from sack [UK, wool] to avogram

Unit Definition (sack [UK, wool])
The sack [UK, wool] is a traditional unit of weight, varying for different commodities shipped in sacks. In Britain, for example, the sack was a traditional measure for wool, fixed by Edward III at 364 pounds (26 stone) in 1340.

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