public static CovidDataRow operator +(CovidDataRow a, CovidDataRow b) { CovidDataRow result = new CovidDataRow { NewCases = a.NewCases + b.NewCases, TotalCases = a.TotalCases + b.TotalCases, NewDeaths = a.NewDeaths + b.NewDeaths, TotalDeaths = a.TotalDeaths + b.TotalDeaths }; return(result); }