'Half' in the Bible

Then the king said to her, “What is troubling you, Queen Esther? What is your request? It shall be given to you, up to half of the kingdom.”

Then Esther replied, “My petition and my request is this:

And the king said to Esther on the second day also as they drank their wine, “What is your petition, Queen Esther? It shall be granted to you. And what is your request? Even to half of the kingdom, it shall be done.”