to
Format a finite, non-null amount as "N,NNN.NN <unit>", or "n/a" for null, non-finite, or null-unit inputs. Null unit reads as "n/a" because there's no sensible label to attach.
Format a finite, non-null amount as "N,NNN.NN <unit>", or "n/a" for null, non-finite, or null-unit inputs. Null unit reads as "n/a" because there's no sensible label to attach.