Inheritance after 25 years of fathers death

Assalam o Alaikum Dear mufti sahab i have a question regarding property issue as my father died almost 25 years ago and we are 7 brothers and 5 sisters living with mother Alhamdulillah. My father left some agricultural land which we have not distributed untill now for some reasons but we are now agreed to divide according to shariah. My question is as in 25 years we have purchased other properties as well like house, plots, car and tractor etc from the same agricultural land now how we divide the other property which we purchased after father. Please give answer with reference if possible JazakAllah