A man and his wife, son and daughter died in an accident; how should their estates be divided?

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Check below answers in case you are looking for other related questions:
Do their daughters have a share of the inheritance if they have no need of it?
He died and left behind a wife, four sons and four daughters

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Related Answers:
She died and left behind a husband, five sons and four daughters
What should he do about his paternal uncle who unlawfully took his house that he inherited from his father, and he cannot do anything about it?
He left a will bequeathing to the males and depriving the females – what should the heirs do?
Do their daughters have a share of the inheritance if they have no need of it?
He died and left behind a wife, four sons and four daughters

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