public (decimal, decimal, decimal, decimal) GetSuperImportantTuple(int input)
{
    var aParameter = GetAParameter(input);

    // Copy when getting that tuple
    var tuple = GetA4DecimalsValueTuple();

    // Copy into that function
    var anotherParameter = GetAnotherParameter(tuple);

    // Copy when returning the value
    return TransformValueTuple(tuple, anotherParameter);
}