Instructions: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Input: How did American Idol earn $900 million by the seventh season?, Context: The dominance of American Idol in the ratings had made it the most profitable show in U.S. TV for many years. The show was estimated to generate $900 million for the year 2004 through sales of TV ads, albums, merchandise and concert tickets. By season seven, the show was estimated to earn around $900 million from its ad revenue alone, not including ancillary sponsorship deals and other income. One estimate puts the total TV revenue for the first eight seasons of American at $6.4 billion. Sponsors that bought fully integrated packages can expect a variety of promotions of their products on the show, such as product placement, adverts and product promotion integrated into the show, and various promotional opportunities. Other off-air promotional partners pay for the rights to feature "Idol" branding on their packaging, products and marketing programs. American Idol also partnered with Disney in its theme park attraction The American Idol Experience.
Output:
its ad revenue