release-22.2:Backport!6854

Merged Andrey Vertiprahov requested to merge cherry-pick-f190b612 into release-22.2

noc/noc#1956 Fix ZeroDivisionError when prefix usage calc.

See merge request !6854 (merged)

(cherry picked from commit f190b612)

063c4f76 Fix ZeroDivisionError when prefix usage calc.

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