How much is the share of the deceased's parents, who have three sons, from their son's inheritance, knowing that the wife gets one-eighth?

The estate of a deceased man who leaves behind his parents, wife, and children is divided as follows: Each parent receives one-sixth (1/6) as a prescribed share due to the presence of children. The wife receives one-eighth (1/8) as a prescribed share due to the presence of children. The remaining portion goes to the children by way of ta'sib (residuary heirship), with the male receiving the equivalent of two females' shares. Matters of inheritance must be referred to the Sharia courts for investigation, as there may be other heirs, bequests, debts, or rights of which the heirs are unaware.