Where capital unavailable, rent facility (4)

I believe the answer is:

ease

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'facility' is the definition.
(facility can mean ease or absence of difficulty)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for ease that I've seen before include "Relief" , "Lessen intensity" , "Make less severe, comfort" , "Relieve or slacken" , "Make comfortable" .)

I've seen this clue in The Times.

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