41. Solving a chemistry problem

2. How many percent of chlorine is contained in carnalite if its sample is 4.2560 g; after dissolution, its solution was transferred to a volumetric flask and diluted to 250 ml; titration of 20.00 ml of the obtained solution requires 37.80 ml of AgNO3 with a chlorine titer of 0.003602 g/ml?