Due to inflation khoums and iraimbilanja have in practice fallen into disuse. Mauritania, where 1 ouguiya = 5 khoums, and Madagascar, where 1 ariary = 5 iraimbilanja. Each ouguiya constitutes five khoums (meaning "one fifth"). Mauritania (1 ouguiya = 5 khoums) and Madagascar (1 ariary = 5 iraimbilanja). Five khoums make an ouguiya, hence one khoums can be expressed as 0.2 ouguiya.