Converts n into a metric prefixed representation.
number to convert
input prefix: 0 = None, 1 = 'k', -1 = 'm', 2 = 'M', -2 = 'µ' etc., up to +/- 4
this instance
For n == 12345678 this.scaled is about 12.35 and this.prefix is 'M'.
See Implementation
Converts n into a metric prefixed representation.