Will my fasting in the coming Ramadan be accepted, given that I missed days in previous Ramadans due to masturbation? Does the fidyah (expiatory feeding) multiply due to delaying the make-up? What is the ruling on fasting the missed days with the intention of making them up, without paying the fidyah before the new Ramadan? How is the fidyah paid and the poor fed?

What you did by intentionally breaking your fast during Ramadan is a reprehensible sin, and you must offer sincere repentance and make up all the days whose fasts you corrupted. You also owe a fidyah (expiatory feeding) of one poor person for each day whose makeup you delayed until the next Ramadan began without a valid excuse. Your fasting in subsequent years and the days whose fasts you did not corrupt are valid and sufficient.

The method for the fidyah is to feed approximately 750 grams of rice for each day to one or more poor persons. If you make it one and a half kilograms, that would be better.