A comparison between the value of the rate at which one currency (for example, in the local currency) with one unit of the currency as the value of the Thai baht against the u.s. dollar is equal to 40 1 baht, etc.
rate compared to the value of one currency (such as local currencies), with one unit of money the main currency, such as exchange rate against the dollar. 1 unit The United States was 40 baht.