(70800 - 23312) × 4 - 243640 : 8 + 8320 : 4 + 120 + 4 × 280
1) (70800 - 23312) = 47488
2) 47488 × 4 = 189952
3) 243640 : 8 = 30455
4) 8320 : 4 = 2080
5) 4 × 280 = 1120
6) 47488 - 30455 = 17033
7) 17033 - 120 = 17153
8) 17153 + 1120 = 18273
(70800 - 23312) × 4 - 243640 : 8 + 8320 : 4 + 120 + 4 × 280
1) (70800 - 23312) = 47488
2) 47488 × 4 = 189952
3) 243640 : 8 = 30455
4) 8320 : 4 = 2080
5) 4 × 280 = 1120
6) 47488 - 30455 = 17033
7) 17033 - 120 = 17153
8) 17153 + 1120 = 18273