What is the share of the husband, the two full sisters, and the children of the deceased brother (three males and one female) from the estate of a woman who died and had no children?

The heirs are the husband and the sisters. The husband receives one-half due to the absence of a direct descendant. The two full sisters receive two-thirds due to their plurality and the absence of anyone to make them 'asabah (agnatic heirs) with another female. As for the brother's children, they receive nothing because they are 'asabah, and nothing remains for them after the sharers (ashab al-furud) have taken their shares. The origin of the inheritance is six and it increases to seven shares, with three shares for the husband and four for the sisters. Complex issues should be referred to the Sharia (definition) courts for investigation.