How is inheritance divided between a full sister and a paternal half-sister of the deceased?

If the deceased leaves no heirs other than a full sister and a paternal half-sister, their estate is distributed as follows: The full sister receives one-half as a prescribed share due to her being the sole full sister, and the paternal half-sister receives one-sixth as a complement to two-thirds. Whatever remains of the estate after their prescribed shares is returned to them (in proportion to their shares). The original base number for the calculation is six, and it is corrected to four. The estate is then divided into four shares: the full sister takes three shares, as a prescribed share and by return, and the paternal half-sister takes one share, as a prescribed share and by return.