How is the sum of 137,0 Saudi Riyals to be divided among heirs consisting of: 3 grandsons (sons of a son), a father, a mother, and 3 daughters?

If the heirs are limited to the father, mother, and daughters, then the sons of the sons inherit nothing, as the sharers of the prescribed shares exhaust the inheritance.

The father and mother each receive one-sixth, and the daughters receive two-thirds. The inheritance is divided into 18 shares: 3 for the father, 3 for the mother, and 12 for the daughters (4 for each daughter).

The heir's share is calculated by dividing the inheritance by 18 and then multiplying the result by the heir's number of shares.

It is necessary to refer inheritance matters to the Sharia courts, as there may be wills, debts, or rights that take precedence over the heirs' rights, of which the heirs may not be aware.