It is desired to produce milk powder with 5% moisture content from milk with a dry matter content of 13%. Milk is fed to the system at a rate of 100 kg/min. In the first stage, the dry matter content of the milk was increased to 50% using an evaporator and concentrated. Milk powder with 5% moisture content was produced in this spray dryer from concentrated milk. How much water has been removed in the evaporator, what is the amount of milk powder obtained?