<prompt> Translate the following text to SwahiliTo have a more precise view of unit costs and to have a better level of comparison with U.S. costs which are by route instead of by geographic area, the costs are then divided into two groups per area.  <response>: Kwa kuwa na mtazamo sahihi zaidi wa gharama za kitengo na kuwa na kiwango bora cha kulinganisha na gharama za Marekani ambazo ni kwa njia badala ya eneo la kijiografia, gharama hizo zimegawanywa katika makundi mawili kwa kila eneo. 