'Eighty' in the Bible

Now there was a great famine in Samaria; and they besieged it until a donkey’s head was sold for eighty shekels of silver, and a fourth of a kab of dove’s dung for five shekels of silver.

Then they went in to offer sacrifices and burnt offerings.Now Jehu had stationed eighty men outside for himself and said, “If any of the men whom I have brought into your hands escape, the one who lets him go shall forfeit his own life for that man’s life.”