The ariary is the currency of Madagascar. It is notionally subdivided into 5 iraimbilanja and is one of only two non-decimal currencies currently circulating. The names ariary and iraimbilanja derive from the pre-colonial currency, with ariary being the name for a silver dollar. Iraimbilanja means "one iron weight" and was the name of an old coin worth 1⁄5 of an ariary. However, as of May 2023, the unit is effectively obsolete since the iraimbilanja has practically no purchasing power, and the coins have fallen into disuse.Wikipedia