Antonov bought 60 candies. He gave a pack of candy to his sister. If a pack of candy has 20 pieces, how many packs does Antonov still have? Let's think first. Chain of thought:
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Antonov was left with 60 - 20 = 40 pieces of candy. Therefore, he still has 40 / 20 = 2 packs of candy.
Therefore, the answer is 2.
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