<prompt> Translate the following text to SwahiliAlong the Grand Canals 3.8 km more than 2 miles, varying in width from 30 to 70 m 100 to 230 ft, are the old trading headquarters and warehouses of its distant commercial heyday.  <response>: Kwa urefu wa kilomita 3.8 zaidi ya maili mbili ya Grand Canal, ambayo inatofautiana kwa upana kutoka mita 30 hadi 70, ni makao makuu ya zamani ya biashara na maghala ya kilele chake cha kibiashara cha mbali. 