A number field may be an integer field (12, -44), a floating point field (3.14159), either an integer or floating point number followed by an integer exponent (1E-14, 2.65e3), or either an integer or a floating point number followed by one of the following scale factors. All of this is case-insensitive.
t 1e12 g 1e9 meg 1e6 k 1e3 mil 25.4e-6 m 1e-3 u 1e-6 n 1e-9 p 1e-12 f 1e-15 a 1e-18