Please remember that the number of people to the right in your formula are not all recovered. They could still die. So the chances of dying from the virus _could_ be higher than the %s you have calculated.
> So the death rate in Hubei is 9 times of other provinces. Is this really possible?
The numbers suggest as much.
While I share your skepticism of the Chinese reported numbers - remember that the Hubei province is the epicenter and is currently locked down. It is resource strained. So I expect the rate of death there to be higher than elsewhere.
I also expect the Zhejiang numbers to trend in the other direction, as they have just announced it will be locked down too.