Context: As of 2013, the American Idol alumni in their post-Idol careers have amassed over 59 million albums and 120 million singles and digital track downloads in the United States alone.

Question: How many albums have been sold by American Idol contestants up until 2013?
Answer: 59 million

Question: How many single have been sold by American Idol contestants up until 2013? 
Answer: 120 million

Question: How many albums have Idol contestants created as of 2013?
Answer: 59 million

Question: How many singles and digital downloads have Idol contestants created as of 2013?
Answer: 120 million