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NEW YORK CITY — Each week, PIX11 anchor Dan Mannarino will introduce a surprise expert guest to answer a question posed by another anchor.

This week’s question is from Marysol Castro: Which block is the most expensive in Manhattan?

“I was fantasizing about winning Lotto. And when I got my cash, I wanted to figure out which block I could potentially move to in the Big Apple,” she said.

So who was the surprise guest?

Real estate broker and television personality Ryan Serhant, of “Million Dollar Listing New York” and “Sell it Like Serhant,” joined the PIX11 Morning News team on Monday to answer Marysol’s burning question.