Yes, this repetitive process makes it a slow solution.

line 7 and 8 are totally random, i was just making an experiment.
suddenly, it did not time out.
i deleted those, and again I was out of time. and then accidentaly I submitted this...

sorry about that, i was just happy i found a solution under a minute. now i see it is not the fastest one..

I believe there is a wrong message while failing tests. The ordering of the words, it says "{correct_result} should equal {wrong_result}", like in this case: 'LoBan wario hello' should equal 'LoBan wariohello'.

I am having a trouble with only a single test:
[13279649315191100, 2491547230640080] should equal [79677895891146600, 14949283383840400 ]
This seems to be some technical error, as if i divided both pairs, the results are almost indistinguishible: 5,32988062673793 vs 5,32988062673796.
But I'd rather not change my methodology (using modul Fractions) so I will create an exception.

In my opinion this kata could be 8 kyu or 7, as the solution is almost straightforward.