👉 The word '0 19' is a play on words, meaning "zero one-ninth" - two digits for the first and ninth digit.
To explain this to a young child: - Think of numbers as toy blocks. - You can only have one block in a group (like 'zero one nine'). - So when you have 0, that's like having two blocks - but with one gone. So, if we look at zero 19, it looks like this: ``` 0 1 9 ```
