According to this
https://ukandeu.ac.uk/fact-figures/h...ive-in-the-eu/
There were 508 million people living in the EU in 2015. So, by taking away our 66 million, you get the total population of the other EU members. Therefore, if you were to substitute 442 million for 66 million and change the letters EU for U.K. In your first sentence, it seems to me that, by using your logic, we could also swap the word "big" for, say, the word "gigantic" because this is what we face with a no deal Brexit especially.
Also, although it has been harder to maintain this position as time has passed since June 2016 and the vote to Leave has been hijacked by the Zealots to mean authorisation of a no deal Brexit, I still feel the result of the vote should be respected and a negotiated Brexit delivered. However, given what Nigel Farage was saying prior to the vote in 2016
https://www.mirror.co.uk/news/uk-new...rendum-7985017
I can completely understand why there are so many who are pushing for a second referendum.