How many kaffaarah will be given for breaking an oath multiple times

If one breaks an oath multiple times about the same thing, e.g," By Allah, I will not commit this sin again," and when he breaks this oath, then without paying the kaffaraah, he takes this oath again, then breaks it once more, will the kaffaraah have to be given once, or for both times?

Similarly, if a person breaks an oath repeatedly about different matters, and without paying the Kaffaraah, makes oaths once again, does he have to pay the kaffaraah once for each separate oath?