(77838+3702):(280*804-224214)*30+80 = 2780
1) 77838+3702 = 81540
2) 280*804 = 225120
3) 225120 - 224214 = 906
4) 81540 : 906 = 90
5) 90 * 30 = 2700
6) 2700 + 80 = 2780
Ответ: 2780
5207*96+4571040:534-(900*4000-3093468) = 1900
1) 900*4000 = 3600000
2) 3600000 - 3093468 = 506532
3) 5207*96 = 499872
4) 4571040:534 = 8560
5) 499872 + 8560 = 508432
6) 508432 - 506532 = 1900
Ответ: 1900