1)
60 × (72 568 – 72 560) × 70 + 843 =
60 × 8 × 70 + 843 =
480 × 70 + 843 =
33600 + 843 =
34443
2)
70 × 8 – 56 : (235 678 – 235 670) × 70 + 561 =
70 × 8 - 56 : 8 × 70 + 561 =
560 - 7 × 70 + 561 =
560 - 490 + 561 =
71 + 561 =
631