How is the inheritance of a deceased person divided if he left one son, one grandson, three daughters, and a wife?

If the deceased left behind only a wife, a son, daughters, and a grandson (son's son), then the wife receives one-eighth due to the presence of a lineal descendant. The remainder is for the son and daughters by way of ta’sib (agnatic inheritance), with the male receiving the share of two females. The grandson receives nothing, as he is excluded by the son through hijb hirmān (exclusion from inheritance). The estate is divided into forty shares: the wife receives five shares, the son fourteen shares, and each daughter seven shares.