She died and left behind a husband, children and parents who are not Muslim

Dear Brothers & Sisters,
As-Salaamu-Alaikum wa Rahmatullahi wa Barakatuh. (May Allah's Peace, Mercy and Blessings be upon all of you)
One of our brothers/sisters has asked this question:
My wife died leaving me [the husband]a girl and 2 boys.She also has 3sister which 1 of them is a christian,2brothers 1 is also a christian,and a father and mother who also are not muslims.
How do I share her wealth,what is the ratio i am to use in calculating each share to be allotted to the beneficiary.
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Check below answers in case you are looking for other related questions:
She died and left behind a husband, two daughters, two sisters, a grandmother, a maternal uncle and two maternal aunts
He built an apartment over his father’s house with his own money; do the heirs have any right to it?

Answer:
Praise be to Allaah.

If the wife was Muslim, no one can inherit from her except her Muslim heirs, because of the reports narrated by al-Bukhaari (6764) and Muslim (1614) from Usaamah ibn Zayd (may Allah be pleased with him), according to which the Prophet (blessings and peace of Allah be upon him) said: “A Muslim cannot inherit from a kaafir and a kaafir cannot inherit from a Muslim.” 

Shaykh al-Islam [Ibn Taymiyah] (may Allah have mercy on him) said: The Muslims are unanimously agreed that a kaafir cannot inherit from a Muslim and a kaafir man cannot marry a Muslim woman. End quote from al-Fataawa al-Kubra (3/130). 

So her estate is to be divided as follows: 

The husband (which is you) gets one quarter, because of the presence of descendants of the deceased (the children). Allah says (interpretation of the meaning): “but if they leave a child, you get a fourth of that which they leave after payment of legacies that they may have bequeathed or debts” [al-Nisa’ 4:12]. 

The rest goes to the daughter and two sons, with each male getting their share of two females, because Allah says (interpretation of the meaning): “Allaah commands you as regards your children’s (inheritance): to the male, a portion equal to that of two females” [al-Nisa’ 4:11]. 

Her Muslim brother gets nothing, because he is deprived by the presence of a male child. 

Her non-Muslim father and mother do not get anything, as stated above. 

In order to divide the estate among the heirs, it should be divided into 60 equal parts, of which the husband gets 15, each son gets 18 and the daughter gets nine. 

If the wife was not Muslim, then no one can inherit from her except those who followed the same religion as her. 

And Allah knows best.

Whatever written of Truth and benefit is only due to Allah's Assistance and Guidance, and whatever of error is of me. Allah Alone Knows Best and He is the Only Source of Strength.
Your brother and well wisher in Islam

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