Consider the figure provided. 1 mol of an ideal gas is kept in a cylinder, fitted with a piston, at the position A, at $$18°C$$. If the piston is moved to position B, keeping the temperature unchanged, then '$$x$$' L atm work is done in this reversible process. $$x =$$ ______ L atm. (nearest integer) [Given: Absolute temperature $$= °C + 273.15$$, $$R = 0.08206 \text{ L atm mol}^{-1} \text{K}^{-1}$$]