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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
That method returns a string, not a number. Please read the docs. Convert the string to a number.
How do I return the string when the .toFixed method is only work on number?
You're returning a string, not a number.
Me too
Ok, will correct that
You can see test 5 details and trouble shoot why it is failing.
https://github.com/codewars/codewars.com/wiki/Troubleshooting-your-solution#how-can-i-see-which-input-causes-my-solution-to-fail
"XRay" should be "Xray" in your list