Complex sentence: After a major fire in the hotel in June 1946, it was rebuilt at a cost of US $2 million and reopened in July 1947; it flourished for 29 more years, till it was demolished in 1976 to make room for office towers.
Split into simpler sentences: After a major fire in the hotel in June 1946, it was rebuilt by July 1947 at a cost of US $2 million. It started functioning from July 1947 and flourished for 29 more years till it was demolished in 1976 to make room for office towers.