How can you make a lot of money?

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Bill Gates is Microsoft Co-Founder, American business magnate, entrepreneur, philanthropist, investor, and programmer.
 In 1975, Gates and Paul Allen co-founded Microsoft, which became the world's largest PC software company. During his career at Microsoft, Gates held the positions of chairman, CEO and chief software architect, and was the largest individual shareholder until May 2014. Starting in 1987, Gates was included in the Forbes list of the world's wealthiest people and was the wealthiest from 1995 to 2007, again in 2009, and has been since 2014. Gates is currently the wealthiest person in the world with a net worth of US$77.3 billion.Gates is one of the best-known entrepreneurs of the personal computer revolution. Gates has been criticized for his business tactics, which have been considered anti-competitive, an opinion that has in some cases been upheld by numerous court rulings. Later in his career Gates pursued a number of philanthropic endeavors, donating large amounts of money to various charitable organizations and scientific research programs through the Bill & Melinda Gates Foundation, established in 2000..........