I have a container of gas at a pressure of 2.4 atm and a temperature of 343 K with a moveable piston and a small opening that has an initial volume of 36 liters. If I raise the pressure to 4.1 atm, decrease the temperature to 313 K, and measure the final volume to be 51 liters, what is the final number of moles present inside the container if the container held 3.7 moles to begin with? Give your answer in 2 decimals places.