How is the inheritance divided among 3 grandsons (sons of a son), 4 daughters, and a full sister?

If the heirs are limited to those mentioned, the daughters receive two-thirds, as stated in the Almighty's words: "And if there are women, two or more, they will have two-thirds of what he left." The remainder goes to the grandsons, based on the Prophet's (peace be upon him) saying: "Give the prescribed shares to those entitled to them; then whatever remains is for the nearest male heir." The full-sister inherits nothing, as she is excluded by the grandsons. The inheritance is divided into 18 shares: two shares for each grandson and three shares for each granddaughter. The matter of inheritance must be presented to the Sharia courts for investigation regarding the existence of wills or debts that take precedence over the heirs' rights.