Complex sentence: The song sold 215,000 copies in the U.S in its first week her best sales week for a song download, and peaked at number 10 on the U.S. "Billboard" Hot 100, becoming Lovato's second solo top-ten single in the country.
Split into simpler sentences: The song sold 215,000 copies in the U.S in its first week. It peaked at number 10 on the U.S. "Billboard" Hot 100, becoming Lovato's second solo top-ten single in the country.