some在此作何解释?

有读者问:

(1)I'm sure we'll get our money back the next two months, and then some.

请问在这一句中的不定代词some作何解释?

句中的and then some是一种固定说法,意谓and a lot more(而且远不止此),在句中应重读。再如:

(2)She is as attractive as Marilyn Monroe and then some .

有时可译作“至少”,如:

(3)It would cost all the money he had and then some .