What is the value of the specific third-party bequest when other bequests and heirs exist?

Primary text

To determine the value allocated to the third-party legatee (who receives a quarter of the estate), the common denominator (twenty-four) must have one-sixth deducted for the second bequest (the one-third portion) and one-fourth deducted for the third bequest (the one-fourth portion specified for this legatee). The remaining portion of the common denominator determines the specific portion allocated to the legatee receiving the fixed share.