We have that 50 sessions cost $913 and we want to know how much money will it cost to do 163 training sessions.
In order to solve for the ammount of money 163 sessions would cost, we multiply the total ammount of sessions we want to know (164 sessions) times the total cost of the 50 sessions ($913) and divide it by the total ammount of sessions we can do with the $913 (50):