private static void HandlingNestedOptionsWithFlatMap(decimal number, decimal firstDivisor, decimal secondDivisor)
{
IOption <decimal> divisionResult = Divide(number, firstDivisor);
IOption <IOption <decimal> > resultOfDoubleDivision = divisionResult.Map(r => Divide(r, secondDivisor));
// This option has value if both the inner and the outer option have value.
IOption <decimal> flattenedResultOfDoubleDivision1 = resultOfDoubleDivision.Flatten();
// Same can be done with 1 call.
IOption <decimal> flattenedResultOfDoubleDivision2 = divisionResult.FlatMap(r => Divide(r, secondDivisor));
}