$n = 1234;              # decimal integer
    $n = 0b1110011;         # binary integer
    $n = 01234;             # octal integer
    $n = 0x1234;            # hexadecimal integer
    $n = 12.34e-56;         # exponential notation
    $n = "-12.34e56";       # number specified as a string
    $n = "1234";            # number specified as a string