How is the estate of a deceased father to be divided among his wife, his only daughter, and his brothers and sisters, given that he had a son who died before him and who had a wife?

The inheritance is divided, if the heirs are limited, as follows: The daughter receives half, as per the Almighty's saying: (AND IF THERE BE BUT ONE DAUGHTER, SHE SHALL HAVE HALF). The wife receives one-eighth, as per the Almighty's saying: (BUT IF YOU HAVE A CHILD, THEY SHALL HAVE ONE-EIGHTH OF WHAT YOU LEAVE, AFTER PAYMENT OF ANY BEQUEST YOU MAY HAVE MADE OR DEBT). The remainder of the inheritance goes to the full brothers, with the male receiving the equivalent of the share of two females, as per the Almighty's saying: (AND IF THERE BE BROTHERS AND SISTERS, THEN FOR THE MALE IS THE LIKE OF THE PORTION OF TWO FEMALES). As for the brother who passed away before his father, he has no share in the inheritance due to the non-fulfillment of the condition of the heir's life, and his wife likewise has no share.