Complex sentence: Mahendra did not find hiring a train expensive at that time; as a result, he hired a train for the film's scene where Haasan and Sridevi depart for Ketti, and another train for the film's climax which was shot at the Ketti railway station.
Split into simpler sentences: Mahendra did not find hiring a train expensive at that time, as a result, he hired a train for the film's scene where Haasan and Sridevi depart for Ketti, and another train for the film's climax. The film's climax which was shot at the Ketti railway station.