I've update the example, is it better?

I think the description needs to be more clear and provide a solid example of inputs and an expected output.

you need to calculate the factorial of the given n 1st

I also got this error.
In spider runs fine, the saple tests run fine, but the attempt fails.
Worst is that it says it takes longer then 12000ms (2min), but it doesn't even wait 30s until it shows me the error message.

Need a better description of what the function should calculate before finding zeroes please.