A phone tree is used to contact families and relatives of Ali’s deceased coworker. Ali decided to call 4359122 families. Then each family calls 4359122 other families, and so on. How many families …👇

A phone tree is used to contact families and relatives of Ali’s deceased coworker. Ali decided to call 4359122 families. Then each family calls 4359122 other families, and so on. How many families will be notified during the fourth round of calls?