So they brute force an account (a not insignificant effort and the attacker now sees your password of "fuzzykittytoes". What are they going to do with that info

So they brute force an account (a not insignificant effort and the attacker now sees your password of "fuzzykittytoes". What are they going to do with that information? Target a bank with it? They can't bruteforce a 14 character password for the bank over the internet. What trivial method would you use to get into your bank account, if you didn't reuse that password?