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He was fined a sum of £1,000.
Companies are prepared to pay substantial sums for the use of our facilities.
We already spend large sums of money on advertising.
The total area was calculated as the sum of all the individual areas in the plan.
The movie has a simple story, but it's greater than the sum of its parts.
In sum, alternative policies were not considered.
This is the British English definition of sum. View American English definition of sum.