eli's magic puzzle

12345678910
Across
  1. 1. 700+50+4, the value a digit has due to placement
  2. 4. 1 to 9
  3. 6. 356=300+50+6
  4. 8. 9x7, the numbers in front of an equal sign
  5. 9. the resulting digit of a subtracting equation
  6. 10. the resulting digit of a multiplying equation
Down
  1. 2. 3+4=7
  2. 3. 30,567
  3. 5. the digit after the equal sign
  4. 7. 589 five hundred eighty nine