Coins of Turkey eurozone since a number of vending machines at the time accepted the 1 new Turkish lira coin as a €2 coin. Since €2 is worth roughly four times more, vending machines affected had to be upgraded at the expense of their owners. From 1 January 2009, the "new" was removed from the second Turkish lira, its official name in Turkey becoming just "Turkish lira" again; new coins without the word "yeni" were introduced in denominations of 1, 5, 10, 25, 50 kuruş and 1 lira. Also, the inner and outer alloys of the 50 kuruş and 1 lira coins were
Decimal and, only the best mathematicians were able to multiply or divide large numbers. These difficulties were completely solved with the introduction of the Hindu–Arabic numeral system for representing integers. This system has been extended to represent some non-integer numbers, called "decimal fractions" or "decimal numbers" for forming the "decimal numeral system". For writing numbers, the decimal system uses ten decimal digits, a decimal mark, and, for negative numbers, a minus sign "−". The decimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9; the decimal separator is the dot "" in many countries (including English speaking ones),