public string Divide(INObject nObject) { string output = string.Empty; if (nObject.IsNumber()) { int?num = nObject.GetNumericValue(); if (num != null) { output = string.Concat(this.DivideByLowNumber((int)num), this.DivideByHighNumber((int)num)); if (string.Empty == output) { output = string.Concat("Divided ", num, " by ", lowNumber, "\nDivided ", num, " by ", highNumber); } } } else { output = "Invalid Item."; } return(output); }