Die diesjährige 29. Januar in Helsinki war eine administrative Entscheidung in diesem proovihääletusel die Annullierung der Ergebnisse, da bewiesen valimismasinad für Menschen problematisch sein.

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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
This year's 29th January in Helsinki was an administrative decision in this proovihääletusel the cancellation of the results, because valimismasinad proved to be problematic for people.