Complex sentence: Walter Freeman charged just $25 for each procedure that he performed and after four decades, Freeman had personally performed as many as 3,400 lobotomy surgeries in 23 states, despite the fact that he had no formal surgical training.
Split into simpler sentences: Walter Freeman charged just $25 for each procedure that he performed. After four decades Freeman had personally performed as many as 3,400 lobotomy surgeries in 23 states, despite the fact that he had no formal surgical training.