Crossword Genius

A hundred over to be divided (5)

Ross

I believe the answer is:

cleft

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

'be divided' is the definition.
(similar in meaning)

'a hundred over to' is the wordplay.
'a hundred' becomes 'C' (Roman numeral).
'over' is a charade indicator (letters next to each other) (in a down clue, some letters go over others).
'to' becomes 'left' (I can't explain this - if you can you should believe this answer much more).
'c'+'left'='CLEFT'

Can you help me to learn more?

(Other definitions for cleft that I've seen before include "division" , "Space" , "split along natural lines" , "Narrow gap" , "Narrow opening" .)

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