How is the inheritance divided among: two grandsons (sons of the son), a full brother, three daughters, and a full sister?

If the deceased leaves behind only daughters and grandsons (sons of the son), then the daughters receive two-thirds as a prescribed share, based on the Almighty's saying: ﴿But if there are [only] daughters, two or more, for them is two-thirds of what he left.﴾ The remainder goes to the grandsons by way of ta’sib (residuary heirship), based on the Prophet, peace and blessings be upon him, saying: "Give the prescribed shares to those entitled to them, and what remains is for the nearest male relative." The brother and sister receive nothing because they are excluded by the grandson. The estate is divided into eighteen shares: the daughters receive twelve shares (four for each), and each grandson receives three shares.