I need to answer the question, so could you give me an example of the question? I want to compare with your idea to answer the question.

What is an example of a foreign currency in the world today, that can be exchanged for U.S. dollars? And describe at least one country where that currency is being used as money now.

Your posting shoulddescribe a specific example (one local product price) of how the currency you've identified is being used today as money in the particular (foreign) country that you are describing.