1) 45 984 * 392 = 18 025 728
2) 873 542 : 2 = 436 771
3) 18 025 728 – 436 771 = 17 588 957
4) 17 588 957 – 8 830 459 = 8 758 498
5) 2 906 387 + 8 758 498 = 11 664 885