He styled himself as a math whiz and “financial doctor” to the rich — even though he was a college dropout who had only a brief tenure at a traditional Wall Street firm. It was said his services were available only to billionaires, whose affairs he handled mostly from a tropical island hideaway.So what did Jeffrey Epstein do to earn hundreds of millions of dollars from a handful of wealthy clients like the private equity billionaire Leon Black?The answer: help rich people pay less in taxes.In the case of Mr. Black, the chief executive of Apollo Global Management, …
