"500 days' wages ... 50." "Denarii" is the plural of "denarius." A "denarius" was a silver coin. (See: [[rc://en/ta/man/jit/translate-bmoney]] and [[rc://en/ta/man/jit/translate-numbers]])
The understood information can be stated clearly. Alternate translation: "the other debtor owed fifty denarii" or "the other debtor owed 50 days' wages" (See: [[rc://en/ta/man/jit/figs-ellipsis]] and [[rc://en/ta/man/jit/translate-bmoney]] and [[rc://en/ta/man/jit/translate-numbers]])