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?
They see 27 total birds because 9 +11 + 7 = <<9+11+7=27>>27
They see an average of 9 birds each because 27 / 3 = <<27/3=9>>9
#### 9