How is an inheritance divided among four full brothers, three maternal half-brothers, a husband, and the deceased's mother?

If the heirs are limited to the husband, the mother, and a number of siblings, then the inheritance is divided as follows:

The husband: Half, due to the absence of a direct descendant, based on the verse: "And for you is half of what your wives leave if they have no child." The mother: One-sixth, due to the presence of a number of siblings, based on the verse: "but if he has brothers [or sisters], for his mother is one-sixth." Maternal siblings: One-third, due to their plurality and the absence of a lineal ascendant or descendant, based on the verse: "And if they are more than that, they are partners in one-third." Full siblings: They share with the maternal siblings in the one-third and it is divided equally among them. This is the prescribed share known as "Al-Mushtaraka" (the shared case), where the full siblings are asabah (agnate heirs) and no share remains for them.

The original basis for the inheritance is six, but it corrects to forty-two. The wealth is divided into forty-two shares: the husband receives twenty-one shares, the mother receives seven shares, and each of the siblings collectively receives two shares.