Exchange rate (otherwise known as the exchange rate) is an agreement known as the exchange rate of a currency against current or future payments, between two currencies of each country or region.
in the exchange system is expressed by the statement of the amount of the unit of "currency" (or "currency price" or "currency sarian") which can be purchased from 1 "currency unit" (also referred to as "currency basis") . for example, in a fragment it is mentioned that the exchange rate is EUR-USDis 1.4320 (1.4320 USD per EUR) which means that the currency is in USD with the use of the base currency exchange rate is EUR
