public int GetTotal()
 {
     return(SplitByDelimiter.Splitter(_formattedNumbers).Where(number => int.Parse(number) < 1001).Sum(int.Parse));
 }
 private IEnumerable <int> GetNegativeNumbers()
 {
     return((from num in SplitByDelimiter.Splitter(_numbers) where int.Parse(num) < 0 select int.Parse(num)).ToArray());
 }