Aamir Khan has 2 ex wives and one current wife, 3 children and 1 step child and one son-in-law
His first wife has one ex husband and two children, one son in law and two step children
His second wife has one ex husband and one son and three step children and one step son in law
His third wife has one ex husband, one present husband, one son, three step children and 1 step son-in-law
Find the value of Ex.
