Needless to say, called in the usual ways.

The single digit at the start of each numeric string is a code for use in diagnosing problems.

select '6((61677*89972)*79533)/3778)', [dbo].[mthstrv08_rtrn_var70]('6(((61677*89972)*79533)/3778)')

select top 10 *, [dbo].[mthstrv08_rtrn_var70]('0'+pict2) from npick4sv2