Currency is a special commodity that acts as the equivalent of all commodities, an instrument for measuring prices, a medium for buying goods, and a means of preserving wealth.
Each country has its own monetary system and its own currency, in order to facilitate the realization of commodity circulation in each country, the calculation of currency exchange rate has become an important tool for world trade. Exchange rate calculators make it easy to calculate the value of goods in other countries, thus completing commodity transactions.
To realize currency circulation, currency knowledge and exchange rate calculation are essential.