The most common and most likely answer to this crossword clue is the 4 plus 4 plus 7 letter word TAKE INTO ACCOUNT
I've seen this crossword clue in The Guardian
T
A
K
E
I
N
T
O
A
C
C
O
U
N
T
More clues leading to the result TAKE INTO ACCOUNT
Buddy explains!
The straight part
We know that "Consider/what cashiers do with banked cash?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case consider/what cashiers do with banked cash? = take into account.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.