Решение:
- \( 408 \cdot 270 + 21008 : 808 = 109960 + 26 = 110000 \)
- \( 71370 : 234 + 695 \cdot 50 = 305 + 34750 = 35055 \)
- \( 280084 : 28 - 125 \cdot 8 = 10003 - 1000 = 9003 \)
- \( (327 + 541350 : 450) : 3 = (327 + 1203) : 3 = 1530 : 3 = 510 \)
- \( (31460 + 1040) : (150 - 2400 : 120) = 32500 : (150 - 20) = 32500 : 130 = 250 \)
- \( (78213 - 75209) \cdot 207 - 45 \cdot 308 = 3004 \cdot 207 - 13860 = 621828 - 13860 = 607968 \)
- \( (992341 : 269 + 780) - 325 : 5 = (3690 + 780) - 65 = 4470 - 65 = 4405 \)
- \( 434280 : 517 \cdot 306 + 27449 = 840 \cdot 306 + 27449 = 257040 + 27449 = 284489 \)
Ответ: 110000; 35055; 9003; 510; 250; 607968; 4405; 284489.