where is the downvote button?

it's not recursive solution

We tried. But obviously not hard enough.

I wrote you the reply somewhere else. Still doesn't work on some random cases (the expected result is just plain wrong).

I found only a user complaining and I cannot reproduce the error (all working fine for me): keep me updated if there are new developments!

I cannot reproduce the error, can you try again?

thank you!

It means your code must raise an error in case of division by zero. The test cases cannot actually check if that is a zero division error, so any type of error would be fine to pass the tests.