Worked out digit late - resorted to legal action (9)

I believe the answer is:

litigated

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'resorted to legal action' is the definition.
I can't judge whether this definition defines the answer.

'worked out digit late' is the wordplay.
'worked out' indicates an anagram.
'digit'+'late'='digitlate'
'digitlate' anagrammed gives 'LITIGATED'.

Can you help me to learn more?

(Other definitions for litigated that I've seen before include "Went to court" , "Took legal action" .)

I've seen this clue in The Daily Express.

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