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Resolving ambiguity in order of operations is easy: simply enumerate all possible parsings of a given expression, compute each value, and then average. E.g., for 9-3-3÷3, ((9−3)−3)÷3 = 1 (9−(3−3))÷3 = 3 (9−3)−(3÷3) = 5 9−(3−(3÷3)) = 7 9−((3−3)÷3) = 9 so 9-3-3÷3 = (1+3+5+7+9)/5 = 5. Voilà! 🧮