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SUBMIT YOUR IDEAjust tried best to bring the expected result. hope I made it there!
Didn't get the same percentages for task 2, but there are a few things left to interpretation:
I am confident the letter suffix % is 40 and not 38
The missing delimiters is confusing because the hint says that the 3 - 2 digit inside the code are correct, but some of them have underscores or no delimiter. I believe the 86% is if you take those into account as wrong, which is not what the hint is telling you to do.
By assuming that the 3 and 2 digits in the code are always right, I get 68% are missing delimiters.