I don't want to pooh-pooh that boy: he's quick at doing sums, which is a fun skill to have.
But the reporter picks big numbers with lots of zeros on the end. Tonnes of 10 year olds would be able to do the sums shown.

So the video demonstrates the reporter's poor number sense, and then who knows how many layers of editors who either didn't know or didn't care whether there was anything worthwhile in the report at all. Would they run a "boy finds rare animal" video showing a kid with a rabbit?

Or gobsmacked reaction shots as a child recites "she sells seashells by the seashore"?

The kid can probably do lots more (I hope so!)
The reporter couldn't ask the right questions.