Consider $1\mathrm{.}2$ moles of an ideal gas in a piston at $298K$ and $0\mathrm{.}2$MPa with volume as $V_1.$ The gas is expanded

isothermally to twice its original volume, then cooled isobarically to $V_l.$ Finally it is heated at constant

volume back to $298K.$

Sketch this process on a diagram to visualize the change of pressure with volume.

Calculate the total work $(W)$ done on the system.