What does 'mop-up' means in this sentence: The bank mopped up only 9 thousand dollars.?

Answer 1

That means after everything else is grabbed by other people, the bank got the last lot remaining, which is only 9000.

Its like someone drops a packet of cookies and picks up the cookies one by one, but the crumbs can't be picked up, so they mop it up.

You can use the term "mop up" to mean "collect".

Either get the remaining bits of whatever. Or jump in right from the start and "mop up" everything there is.

Answer 2

the bank collected/gathered/amassed only 9 thousand dollars.

hope this helps :)