[Perhaps alteration (influenced by pool) of obsolete cesperalle, drainpipe, from Middle English suspiral, vent, from Old French sospirail, breathing hole, from souspirer, to breathe, from Latin suspÄ«rÄre, to sigh; see suspire.]
The Russian Ruble is also known as the Russian Rouble. The United States Dollar is also known as the American Dollar, and the US Dollar. The symbol for RUB can be written R. The symbol for USD can be written $. The Russian Ruble is divided into 100 kopecks. The United States Dollar is divided into 100 cents.
One ruble is 100 kopeks, and denominations are as follows: Notes - 50, 100, 500, 1000 and 5000 rubles; Coins - 1, 5, 10 and 50 kopeks, 1, 2, 5 and 10 rubles. Some 10-ruble notes are still in circulation, but rarely seen in Moscow or St. Petersburg.