Pleace look at this book about this matter:
http://www.quraniclesson.com/download.php?fid=1&ext=pdf&fn=Division%20of%20Inheritance%202nd%20Edition.pdf
You keep spamming the forum with same link to stupid book by the clueless.
Have you noticed what was not mentioned or prescribed in 4:11 and 4:12 which could also be a ground reality, leaving a question for the listeners to enquire about it?
The verses are clear instructions to be applied in the real world and when someone asks to show them, it does little to answer with questions and perpetual expounding -- simply show distributions; it's not complex.
4:176 يستفتونك they seek your ruling قل say الله The God يفتيكم gives you a ruling في in الكلالة al-kalalah إن if امرؤ person هلك died ليس is not له to person ولد child/born...No children; we know
only inheritors to enter the verse are mother and siblings. Therefore...
1 sister, mother: 1 - 1/2 sister = 1/2 mother
2 sisters, mother: 1 - 2/3 sisters, 1/3 each = 1/3 mother
3+ sisters, mother: unstated distribute evenly
1+ sisters, 1+ brothers: 2:1 ratio male to female
mother, 1+ brothers: 1 - 1/6 mother = 5/6 brothers
mother, 1+ sisters, 1+ brothers: 1 - 1/6 mother = 5/6 siblings 2:1 ratio male to female