fifty shekels of silver

A shekel weighs eleven grams. Alternate translation: "fifty pieces of silver" or "550 grams of silver" (See: rc://en/ta/man/jit/translate-bmoney and rc://en/ta/man/jit/translate-numbers)

He may not send her away during all his days

This is an idiom. Alternate translation: "He must never divorce her during his entire life" (See: rc://en/ta/man/jit/figs-idiom)