response: Nice! Over half a billion copies of the books have been sold, and they've even been translated to 73 languages.
original_response: of course. I have read it multiple times too. I am not surprised it is the  best-selling book series in history, and have been translated into seventy-three languages.
history: I like reading. Harry Potter is one of my favorites Ah, cool. Did you know they were written by J. K. Rowling? Yes, it's such a long, intricate story. I'm blown away by her accomplishment. Her books  won multiple awards, and sold more than 400 million copies. That's astounding! They've also gained a wide adult audience, in addition to the younger readers. I read it when I was young, and again as an adult. I enjoyed it both times!
knowledge: , the books have sold more than 500 million copies worldwide, making them the best-selling book series in history, and have been translated into seventy-three languages.