Complex sentence: The paper came out in September 1898, and was an instant success, a movable feast of information, humor and good writing printing 4,000 copies, many more than all the other newspapers put together.
Split into simpler sentences: The paper came out in September 1898, and was an instant success. A movable feast of information, humor and good writing, 4,000 copies were printed, which was more than all the other newspapers put together.