Detailed Instructions: This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
Q: Passage: In 1991, the KFC name was officially adopted, although it was already widely known by that initialism. Kyle Craig, president of KFC US, admitted the change was an attempt to distance the chain from the unhealthy connotations of "fried". The early 1990s saw a number of successful major products launched throughout the chain, including spicy "Hot Wings" (launched in 1990), popcorn chicken (1992), and internationally, the "Zinger", a spicy chicken fillet burger (1993). By 1994, KFC had 5,149 outlets in the US, and 9,407 overall, with over 100,000 employees. In August 1997, PepsiCo spun off its restaurants division as a public company valued at US$4.5 billion (around US$6.5 billion in 2013). The new company was named Tricon Global Restaurants, and at the time had 30,000 outlets and annual sales of US$10 billion (around US$14 billion in 2013), making it second in the world only to McDonalds. Tricon was renamed Yum! Brands in May 2002. 
Question: How many more billion dollars was the Pepsi Co restaurant division worth in 2013 compared to 1997? 
Answer type: Number 
A:
2.