б) 8005 ⋅ 70 800 : 1000 - (600 000 - 823 ⋅ 15) : 1451 + 1651.

1) 8005 ⋅ 70 800 = 566 754 000

2) 566 754 000 : 1000 = 566 754

3) 823 ⋅ 15 = 12 345

4) 600 000 - 12 345 = 587 655

5) 587 655 : 1451 = 405

6) 566 754 - 405 = 566 349

7) 566 349 + 1651 = 568 000

Ответ: 568000