All real numbers can be divided into three categories: positive, negative and zero; Match all positive number
Match: 2 9 +8 005 0420 123456789 40.262,12 +042 262,12 421.265.195,52 0420 $ 0420 € 35 °C 12 °F
No Match: 0 00000 0000 -10 -1 10a