123

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Across
  1. 2. 200 * 2 + 51
  2. 5. 77 * 3
  3. 8. 50 * 12 + 72
  4. 9. 100 * 3 + 1
  5. 10. 45 * 4
Down
  1. 1. 50 * 3 - 16
  2. 3. 52 * 2 + 19
  3. 4. 398 + 123
  4. 5. 190 + 80 + 10
  5. 6. 12 * 12 - 12
  6. 7. 30 + 21