Thermodynamics · Enthalpy of reaction from formation

Consider the reaction :

$\ce{2H2S(g) + 3O2(g) -> 2H2O($l$) + 2SO2(g)}$

The magnitude of enthalpy change for the reaction in kJ mol$^{-1}$ is . (Nearest integer)

Given : $\Delta_f H^{\ominus}$ ($\ce{H2S}$) $= -20.1$ kJ mol$^{-1}$

 $\Delta_f H^{\ominus}$ ($\ce{H2O}$) $= -286.0$ kJ mol$^{-1}$

 $\Delta_f H^{\ominus}$ ($\ce{SO2}$) $= -297.0$ kJ mol$^{-1}$