Solve this logic number sequence puzzle by the correct digit 8080 =…

Solve this logic number sequence puzzle by the correct digit 8080 = 6 1357 = 0 2022 = 1 1999 = 3 6666 = ?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #9354

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