Reading a united utilities meter

Hi
I’m a new user to bulb but am not sure how to enter my electricity meter reading. Bulb has six spaces that must be filled in. The last one being after a decimal point.
My meter has 5 digital digits. Eg. 12345
How do I enter this?
a. 12345.0 Or
b. 01234.5

The “help” examples don’t make this clear and bulb don’t reply to emails!

Thanks

a. 12345.0

I agree it’s not very clear.

bulb don’t reply to emails!
They do, but sometimes it takes them a while.