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Required information

A piston$-$cylinder device initially contains $0\mathrm{.}30$ kg of steam at $3\mathrm{.}5$ MPa $,$ superheated by $7\mathrm{.}4C.$ Now the steam loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at $200C.$

Determine the boundary work $(W_{b,\text{o}\text{u}\text{t}}).($Round the final answer to three decimal places.$)($Include a minus sign if necessary.$)$

The boundary work is $$ kJ $.$