The gambling or culture adviser will show you how many tourists visited your city today and yesterday. If you mouse over the number of tourists, you see a tooltip with a breakdown by wealth level
2,000 / 10,000 low wealth
3,000 / 12,000 medium wealth
80 / 80 high wealth
What does the number in the denominator mean? The numerator appears to be the number of tourists of that wealth level who visited the city.
Best Answer
skovacs1, Is actually right on the money.
As you can see in this example:
Low Wealth Tourist: 242/244
Medium Wealth Tourist: 15,480/15,491
High Wealth Tourist: 77,340/91,520
This city is built specifically around accommodating High Wealth Tourist. The numerator shows how many Tourist I currently have. The denominator shows my current capacity it can currently accommodate.
It should be noted that this number can change at any time even if you don't build anything. Because the hotels (commercial) in your city can keep expanding (growing) to accommodate more and more tourist. I'm not referring to the hotel or suite you build at a casio.