Ответ:

  1. \(197 \cdot 5 = 985\).
  2. \(216 \cdot 4 = 864\).
  3. \(307 \cdot 3 - 704 : 8 = 921 - 88 = 833\).
  4. \(65 \cdot 8 - 535 : 5 = 520 - 107 = 413\).
  5. \(684 : 9 + (506 - 102 \cdot 3) \cdot 6 = 76 + (506 - 306) \cdot 6 = 76 + 200 \cdot 6 = 1276\).
  6. \(736 : 4 + (607 - 428 : 4) \cdot 7 = 184 + (607 - 107) \cdot 7 = 184 + 500 \cdot 7 = 3684\).