Ответ: -43; 82287; 318078
269 ⋅ 3 = 807
69 : 21 = 3
1000 - 807 = 193
3 ⋅ 89 = 267
193 + 267 = -43
76458 + 5829 ------------ 82287
407053 - 88975 ------------ 318078