Are the numbers from the examples supposed to be the same as the ones we get? Because I got different numbers.
Yes, they should. The final test for the course will include a numbers check. To make sure everything is ok - check the original data (sometimes when loading data fractions can be loaded as integers and so on), as well as the presence and correctness of the correct formulas/mappings.
You need screenshots of the model/data to get a more accurate answer.