Give the step-by-step reasoning process and then the final answer. Marcus, Humphrey, and Darrel are bird watching. Marcus sees 7 birds, Humphrey sees 11 birds, and Darrel sees 9 birds. How many birds does each of them see on average?
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They see 27 total birds because 9 + 11 + 7 = 27. They see an average of 9 birds each because 27 / 3 = 9.
The final answer: 9.
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