Big boxes contain 7 dolls each. Small boxes contain 4 dolls each. There are 5 big boxes and 9 small boxes. How many dolls are there in total? Let's think first. Chain of thought:
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There are 7 * 5 = 35 dolls in the big boxes. There are 4 * 9 = 36 dolls in the small boxes. There are 35 + 36 = 71 dolls altogether.
Therefore, the answer is 71.
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