American Currency Quotation
  
An American currency quotation simply refers to the value of a foreign currency as compared to the U.S. dollar in foreign exchange markets. For example, if the Mexican peso is worth 5¢, the American currency quotation would be expressed as US$0.05 per MXN, meaning there are $0.05 U.S. dollars to the Mexican peso. In other words, the quotation shows how much U.S. currency it would take to purchase a single unit of Mexican currency.
If you are planning an exciting trip to the Mayan Riviera and want to purchase MXN$100, it would cost US$5. For up to the minute foreign currency quotations, Google them. They'll have taken the content beautifully from the people who actually built the site publishing those numbers.