How can one quickly and definitively get rid of masturbation, and what is the expiation for broken oaths regarding quitting it, bearing in mind that the questioner is a university student who is unemployed?

Whoever takes multiple oaths regarding a single matter and then breaks them, must offer expiation commensurate with the number of oaths broken, according to the majority of scholars. Some, however, hold that a single expiation suffices if he has not already expiated for the preceding oaths. In the event of financial inability, the one who broke the oath must resort to fasting.