Complex sentence: Hrithik started working on the film immediately after wrapping up Krrish 3, and charged a fee for his performances in the film, which until then was the most any actor in Bollywood had charged up front.
Split into simpler sentences: Hrithik started working on the film immediately after wrapping up Krrish 3. Hrithik Roshan charged for the film which until then was the most any actor in Bollywood had charged up front.