Task: Question Generation
Input (English): West's first six solo studio albums, all of which have gone platinum, have received numerous awards and critical acclaim. All of his albums have been commercially successful, with Yeezus, his sixth solo album, becoming his fifth consecutive No. 1 album in the U.S. upon release. West has had six songs exceed 3 million in digital sales as of December 2012, with "Gold Digger" selling 3,086,000, "Stronger" selling 4,402,000, "Heartless" selling 3,742,000, "E.T." selling over 4,000,000, "Love Lockdown" selling over 3,000,000, and "Niggas in Paris" selling over 3,000,000, placing him third in overall digital sales of the past decade. He has sold over 30 million digital songs in the United States making him one of the best-selling digital artists of all-time.
Output (English): How many songs has Kanye sold digitally in his career?