Complex sentence: The expansion was estimated to cost NOK 17.8 million, of which NATO would fund NOK 15.6 million, and appproved by Parliament on 7 May 1965.
Split into simpler sentences: The expansion was estimated to cost NOK 17.8 million, of which NATO would fund NOK 15.6 million. The expansions were approved by Parliament on 7 May 1965.