Original sentence: The track sold 156,000 copies in its first week and reached number #1 on the UK Singles Chart in August 1998, it has been certified Gold in the UK (400,000 copies)
Edited sentence: The track sold an astonishing 156,000 copies in its first week and reached number #1 on the UK Singles Chart in August 1998, it has been certified Gold in the UK (400,000 copies)