Sorry about that, I got rid of the extra integers. The part with the math module is just to tell users that there's another way to solve, but I see where it's confusing so I removed it.

I fixed it. Does it make sense now?

Okay, then can you show an example of a kata similar to this one, if this isn't a novel kata?

It's a kata for beginners, maybe there is a kata similar to this, but the storyline is different.

Fixed.

Fixed. Anything else?

So you want to always return lists?

Explain.

It's alright. If you want to do it yourself, I'm all good with that.

If you want, you can add this because for me, this is kind of confusing.

Not really because this is addition, not multiplication.

Yes, but I never seen a similar kata to this (I checked), so I don't see any reason for this issue to be raised.

Fixed. Anything else?

Fixed. Check now.

There's never too much katas.