I found a Very Difficult IQ Test on web. You are the guys who are looking for things like this, so it may look familiar for you.
one of it's questions is: 

> What is the box suggesting?

>![enter image description here][1]

>1. 123456789
>2. 176h54308
>3. 627456934
>4. 126485704
>5. 673258719

I have seen the answer, but there was no clues for the logic behind of that.

Please do both, **solve** and **describe** the logic.

PS. if you want to know the answer just like that, I will comment that after 3 or 4 days. Also there will be no link to source until revealing the correct answer.

  [1]: https://i.sstatic.net/zhnZu.jpg