If you are looking for a review of a or a course assignment , could you clarify:
Depending on where this file originated, "Mercado Negro" might refer to:
: The 2016 film Mercado Negro or similar cultural works that explore the criminal underworld.
: Common illegal markets such as unregulated currency exchange (e.g., the "Dólar Blue" in Argentina), counterfeit goods, or prohibited substances.
: It is common in university-level economic courses to use Excel files to model the impact of government intervention on the creation of black markets.
Do you need help contained in such a file?