ANSWER
936 cities
EXPLANATION
John visits 9 cities per week.
To find how many cities he will visit in 2 years, we have to first find how many weeks are in 2 years.
In a year, there a 52 weeks.
This means that in 2 years, there are:
2 * 52 = 104 weeks
Since he visits 9 cities per week, the number of cities he will visit in 2 years is:
104 * 9 = 936 cities
