in one year

Possible meanings are 1) this refers to each year or 2) this refers to a particular year.

666 talents of gold

A talent is a unit of weight equal to about 33 kilograms. You may convert this to a modern measure. Alternate translation: "about twenty-two thousand kilograms of gold" or "about twenty-two metric tons of gold" (See: rc://en/ta/man/translate/translate-bweight and rc://en/ta/man/translate/translate-numbers)