<prompt> Translate the following text to SwahiliSuppose further that they can do this for 1.5 cents per piece and that this saves the Postal Service 4 cents per piece.  <response>: Kwa mfano, kama mtu anaweza kufanya kazi hiyo kwa senti 1.5 kwa kipande, basi huduma ya posta inapoteza senti 4 kwa kipande. 