You're right. There are
300k-350k learners*. Maybe I saw just over 100k on their second and slightly less on their first. That's close enough to your figures to make sense.
*There was a table of numbers of drivers on each provisional licence with that article in the paper, which I can't find now. It had 15 people or so on their tenth or later provisional licence. Those people shouldn't be forced to take the test. No, I think they should have their hands removed surgically, so they can't do any harm with a car. Well, unless they're like
this guy.