There are 26 countries in South America and, in each country, there are 5 cities with 1000 people living in each city.  If the whole population lives in these cities, how many people are there in South America?
Since each country has 5 cities, then in all the 26 countries, there are 26*5 = <<26*5=130>>130 cities.
If each city has 1000 people, then the 130 cities have 130*1000 = 130000
#### 130000