Needing help on how to start this equation

e: ID: A 5. (2 points) An airline company offers flights out of Edmonton. There are three flights from Edmonton to Toronto, two flights from Edmonton to Montreal, one flight from Montreal to Charlotetown, and two flights from Toronto to Charlottetown. If the company starts offering one direct flight from Edmonton to Charlottetown, how many different ways could someone fly from Edmonton to Charlottetown? (Assume the passenger always moves from west to east). Edmonton Montreal Charlottetown Toronto