What is the share of each heir from the estate of a man who died leaving behind two wives, two sons, five daughters, and a grandson whose father died before the grandfather?

If the deceased left only two wives, a son, and daughters, then the two wives receive one-eighth due to the existence of a direct descendant (inheriting offspring). The remainder goes to the son and daughters by way of ta'sib (residuary heirship), with the male receiving the equivalent of the share of two females. The inheritance is divided into sixteen shares: two shares for the two wives, four shares for the son, and two shares for each daughter. As for the son's son, he does not inherit when a direct son is present. It is necessary to consult Islamic courts or knowledgeable scholars when dividing inheritances.