Miguel, a scheduler at Mangel-Wurzel Transport, gets a call from a regular customer needing to move 42.6 m of rock and soil, which Miguel knows from previous experience has an average density of 250 kg/m. Miguel has available a dump truck with a capacity of 11 m and a maximum safe load of 5600. kg. Calculate the number of trips the dump truck will have to make to haul the customer's load away.