first class

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Across
  1. 4. MMCMXXXI =
  2. 5. CXLVI =
  3. 7. 79*19 =
  4. 8. 1674:9 =
  5. 10. 5M 8HT 2T 3H =
  6. 11. 22488:3 =
  7. 13. 5HT 2T 8H 7E =
  8. 15. 3M 3T 5Z =
Down
  1. 1. XCI =
  2. 2. DCCCXLV =
  3. 3. 49833:7 =
  4. 4. 179*14 =
  5. 6. DCXIX =
  6. 7. 1M 3ZT 5T 2Z =
  7. 9. 2485:5 =
  8. 10. 423*13 =
  9. 12. 3ZT 2T 3H 6E =
  10. 14. 87*69 =