What is the expiation for intentionally breaking the fast for two days in Ramadan due to sexual intercourse with one's wife, along with accumulated make-up fasts from a previous Ramadan?

You have committed a grave sin by intentionally breaking your fast in Ramadan, and you must repent and make up for the two days. If the breaking of the fast was due to sexual intercourse, then you must offer the major expiation (kaffarah kubra) for each day, which is fasting for two consecutive months. If you are unable to do so, then you must feed sixty needy persons. If you delayed making up for the fast until the next Ramadan, then you must offer a minor expiation (kaffarah sughra), which is feeding one needy person for each day, unless you were ignorant of the prohibition of delaying. The expiation is immediately obligatory.