Stretches from billionaires (9)

I believe the answer is:

elongates

'stretches' is the definition.
('elongate' can be a synonym of 'stretch')

I can't explain the rest of the clue.

(Other definitions for elongates that I've seen before include "pulls out" , "lengthens the process" , "stretches" , "Extends" , "tortures on the rack!" .)

I've seen this clue in The Guardian.

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