<prompt> Translate the following text to EnglishKwa mfano, katika nchi za Ulaya, barua za DC zinapaswa kugawanywa kwa njia ya njia ya barua ya barua, na kwa njia ya njia ya barua ya barua ya barua ya barua ya barua ya barua ya barua ya barua.  <response>: The first improvement needed in regard to DC mail is a specific study providing the weight distribution of inbound mail received from DC FPAs, by class of mail. 