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Business + Coffee: PayPal buys iZettle, Trump's HIV question, Royal wedding cost

Friday, May 18: PayPal buys Swedish payment firm iZettle for $2.2 billion; Bill Gates says that he explained the difference between HIV and HPV to President Donald Trump on two separate occasions; Prince Harry and Meghan Markle are set to be wed at Windsor Castle. Yahoo Finance's Melody Hahm serves up your news.