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by taybin 5044 days ago
According to this, multiplication wasn't so bad: http://turner.faculty.swau.edu/mathematics/materialslibrary/...
2 comments

Actually real Romans did multiplication on an abacus. Reading from Roman numerals to/from an abacus is an incredibly natural operation.

In Europe the disappearance of abacuses was directly tied to the rise of Arabic notation.

Without a table? Just from memory? I think I'd prefer decimal.