Thermodynamics--calculating work of a system? please help me!!! thanks!?

Consider the following two-step process. Heat is allowed to flow out of an ideal gas at constant volume so that its pressure drops from 2.2 atm to 1.4 atm. Then the gas expands at constant pressure, from a volume of 6.8 L to 9.3 L, where the temperature reaches its original value. Calculate the change in work in joules of the system. (1 atm = 101325 Pa