Crossword Genius

Makes a lot of money when one works as a char (6,2)

Ross

I believe the answer is:

cleans up

I'm a little stuck... Click here to teach me more about this clue!

'makes a lot of money' is the definition.
(I've seen this before)

'when one works as a char' is the wordplay.
I cannot really see how this works, but
'when' could be 'e' (I've seen this in other clues) and 'e' is found within the answer.
'one' could be 'an' (an apple is one apple) and 'an' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for cleans up that I've seen before include "Makes big profit" , "makes a lot of money" , "makes great profit" , "From purges" , "Gets rid of corruption" .)

I've seen this clue in the Evening Standard.
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