Sir I need a typed answer by computer .

Please solve fast

7.(25) A copper cylinder of mass 125 g and temperature 345 "C is cooled by dropping it into a glass beaker containing 565 g of water at a temperature of 20.0 .C. If the mass of the beaker is 50 g, what is the final temperature of the system (in C). assuming that no heat energy is lost to the surrounding air