Crossword Genius

They don't represent a lot of money to a restaurateur! (5,2,5)

Ross

I believe the answer is:

stack of chips

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

'they don't represent a' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'lot of money to a restaurateur' is the wordplay.
I cannot really understand how this works, but
'lot' could be 'stack' (synonyms) and 'stack' is present in the answer.
'of' could be 'o' and 'o' is found in the answer.
'money' could be 'p' and 'p' is found within the answer.
This explanation may well be incorrect...

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