How is the inheritance divided between a maternal half-brother and two paternal nephews?

If the deceased leaves no heirs other than those mentioned, then his maternal brother receives one-sixth as a prescribed share, based on the Almighty's saying: "And if a man or a woman leaves neither ascendants nor descendants but has a brother or a sister, then for each one of them is the sixth." The remainder goes to his two paternal nephews by way of ta'sib (residuary heirship), equally divided between them, based on the Prophet's (PBUH) saying: "Give the prescribed shares to those entitled to them; and whatever remains is for the closest male relative." The inheritance is divided into twelve shares: two shares for the maternal brother, and five shares for each of the paternal nephews.