How are the assets of a man who died and left behind a wife, a brother, a sister, and a mother divided?

The man's estate is divided among his heirs as follows: the wife gets one-fourth, the mother gets one-sixth, and the remainder is divided among the siblings, with the male receiving the share of two females.

For example: If the inheritance is 18,000, the wife gets 4,500, the mother gets 3,000, and the remaining 10,500 is divided among the siblings, with the female receiving 3,500 and the male 7,000.