How is the calculation performed when the remainder division results in an equality between the remaining share for the grandfather/sister(s)/brother(s) and the fixed one-third remainder?

Primary text

When the number of siblings increases such that the one-third of the remainder equals the share resulting from equal division (muqasamah), one should assume the fixed one-third remainder. The problem is multiplied by three, resulting in thirty-six parts. The remaining twenty-one parts are distributed such that the grandfather receives one-third of that remainder, which is seven parts, and the rest (sixteen parts) goes to the siblings. If this does not result in a sound calculation based on thirty-six, the multiplier or the reduced common denominator of thirty-six is used to determine the sound basis.