Making Numbers Talk

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Across
  1. 2. 37 + 36
  2. 3. 17(3)
  3. 4. 27,689 + 27,689
  4. 6. Three million, seven hundred eighty-one thousand, nine hundred thirty-seven
Down
  1. 1. (400-3)(9)
  2. 3. 2542 + 1209
  3. 4. 191(11)(18)
  4. 5. one divided by two
  5. 7. 0.3(3)
  6. 8. nine squared plus twelve