How is the estate of the deceased distributed if his heirs are a paternal grandfather and grandmother, three full sisters, a full brother, and a maternal grandmother?

For your deceased grandmother, the maternal and paternal grandmothers each receive one-sixth as a prescribed share, to be divided equally between them. Whatever remains after the grandmothers' share is distributed, the grandfather takes one-third of it, as this is his most favorable share. The remainder, after the grandfather's share, is divided among the brothers and sisters, with the male receiving twice the share of the female.