Original: For a full-length (90-minute) movie, there would be approximately 64,800 stops, and possibly far more if parts were shot with "singles" or "ones" (one frame exposed for each shot).
Simplified: For a full-length (90-minute) movie, there would be about 64,800 stops. IF some of the parts were done with only a single, not double frame, there would be even more stops.