Milk with 14% (w/w) total solids is being concentrated in a single-effect evaporator with a feed rate of 20,000 kg/hr at 10C. The evaporator is being operated at a sufficient vacuum to allow the product moisture to evaporate at 75C while steam is being supplied at 232.1 kPa. If the desired concentration of the final product is 40% total solids, compute the steam requirement and economy for the process when condensate is released at 75C.