Complex sentence: Approximately 60 billion pounds (27 million tonnes) of nurdles are manufactured annually in the United States alone, and one pound of pelletized HDPE contains approximately 22,000 nurdles (approximately 20 mg per nurdle).
Split into simpler sentences: Approximately 60 billion pounds (27 million tonnes) of nurdles are manufactured annually in the United States alone. One pound of pelletized HDPE contains approximately 22,000 nurdles (approximately 20 mg per nurdle).