I recently saw a news piece about Corin Tellado, Spain's Grand Old Lady of Romance writing. She was hugely popular in the Sixties and Seventies, and her books are still read today.
The report said that in her heyday she averaged sixty novels a year, and she once wrote a novel in a single day. Apparently she collapsed at the end of the day, but I would have collapsed around lunchtime! In her almost sixty years of writing she has written about 4,000 titles.
Now, writing a novel a week probably leads to some formulaic prose, but what this woman accomplished is staggering. It makes my weekly quota of seven to ten thousand words seem downright lazy!