The Cooper #1

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Across
  1. 3. How many gospels are there?
  2. 4. Made up of a large number of the answer of 8
  3. 7. The missing page number
Down
  1. 1. The number that can be divided by 2 and equal the same amount
  2. 2. Made up of letters
  3. 5. Books contain them
  4. 6. Looking to detect something
  5. 7. 843 x _ = 5058