Original: Mykolaiv is the administrative center of the Mykolaiv Oblast (province), as well as that of both the Mykolaivskyi and Zhovtnevyi raions (districts) within the oblast.
Simplified: It is the administrative center of the Mykolaiv Oblast (province), as well as of both the Mykolaivsky and Zhovtnevy raions (districts) within the oblast.