Grandfather had two wives how will the property get distributed

Dear Experts, My grandfather has two wives. He had one son (my 50+ years old father) by his first wife. First wife died due to medical condition when my father was five years old. My grandfather married with his second wife (alive now) then had one daughter and two sons. Now after my grandfather is died last year without leaving any will, his property has to be divided his children from first and second wife. Could you please guide us how much will be my father's share of my grandfather ancestral and acquired property.Thanks