Steam flows steadily through a turbine. The inlet conditions of the steam are 4.5 MPa, 700 °C, and the exit conditions are 0.5 MPa and 170 m/s. The mass flow rate of the steam is 25 kg/s and the velocity at the inlet is negligible. The rate of heat loss is 440 kW and the work done by the steam in the turbine is 22.75 MW. Calculate the temperature at the exit of the turbine.