Complex sentence: Braathens Rederi sold the sister company Braathens Helikopter to Helkopter Service for NOK 225 million on 30 September 1993, and the money was used to buy Braathens SAFE stock.
Split into simpler sentences: Braathens Rederi sold the sister company Braathens Helikopter to Helkopter Service for NOK 225 million on 30 September 1993. The money was used to buy Braathens SAFE stock.