Sam, a scheduler at Mangel-Wurzel Transport, gets a call from a regular customer needing to move 71.0 m³ of rock and soil, which Sam knows from previous
experience has an average density of 250 kg/m³. Sam has available a dump truck with a capacity of 9 m² and a maximum safe load of 4800. kg.
Calculate the number of trips the dump truck will have to make to haul the customer's load away.