My father is alive but his memory really weak, so us siblings have decided to gave our older sister the power of attorney, now we would like to sale the house and distribute the money.
We are 3 brothers and five sisters our mother has passed away as well as our older brother, But we were wondering about his family's share. As well as our share according to the quran and hadith

What Quran and Sunah say about distribution on that money what will be the ratio among us (brother and sister) as well as my father share.

Please guide us according to quran and hadith.

Thanks.