the conversion value of the male from twenty years old up to sixty years old is fifty shekels by the standard of the sanctuary shekel.

"'If a man consecrates to the Lord some of his own landed property, the conversion value must be calculated in accordance with the amount of seed needed to sow it, a homer of barley seed being priced at fifty shekels of silver.

You must count fifty days -- until the day after the seventh Sabbath -- and then you must present a new grain offering to the Lord.