Addition-Subtraction-Multiplication

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1234
Across
  1. 1. Sum of 4568 and 2866
  2. 2. 10000-9999
  3. 3. Difference between 10000 and 5004
  4. 4. 12 X 9
Down
  1. 1. 4863+2500
  2. 2. Product of 7 and 2000