<prompt> Translate the following text to SwahiliAd revenue increased but not enough to cover enormous new Recruiting new subscribers by direct mail, printing more magazines, and mailing more magazines are tremendously expensive operations.  <response>: Mapato ya matangazo yaliongezeka lakini hayakutosha kufunika idadi kubwa ya wanachama wapya kwa barua ya moja kwa moja, kuchapisha magazeti zaidi, na kutuma magazeti zaidi ni shughuli za gharama kubwa sana. 