Take my rebooted series for example. It was honestly terrible in terms of writing and plot flow the first time I published it. Of course, I had written them during my high school days, my early days of writing, but right now, I'm seeing major improvements and I hope I can keep on that path.
The rate of chapters coming out of Hubpages is an estimate of one or more a week. That's the minimum rate, anyway. Depending on my mood, I might even end up publishing three chapters. Which story gets more number of chapters out also depends on my mood. Sometimes, its two chapters of the same story, or just one chapter for each story.
I can earn money on Hubpages, but at this point, I'm not likely to reach the threshold to get paid anytime soon. However, Hubpages is a great way for me to spread my wings as a writer. And it's a great way to spread word about my writing since the community is sort of designed so at least someone reads my work outside of my followers.