1) \(623 - 518.2 = 104.8\)
2) \(0.55 \cdot 104.8 = 57.64\)
3) \(1.24 \cdot 68 = 84.32\)
4) \(57.64 + 84.32 = 141.96\)
5) \(141.96 - 1.96 = 140\)
Ответ: 140