<prompt> Translate the following text to EnglishAsilimia ya jumla ya gharama za usindikaji wa barua ingekuwa na kurekebishwa kama kugawanyika kazi, automatisering, au mchanganyiko wa barua alikuwa na athari tofauti sana juu ya gharama za usindikaji wa barua.  <response>: The total percentage of mail processing costs would have to be adjusted if worksharing, automation, or mail mix had significantly different impacts on mail processing costs. 