323. Вычислите: 1) |-106| + |-8,2| · |−25/41|; 2) |-1| + |-0,85| · |16/17|; 3) |−55/81| : |−44/135| + |8 11/12|; 4) |−2 2/7| − |303/400| : |−707/800|.

1. Вычислим модули, затем умножение: \(106 + 8.2 \cdot \frac{25}{41} = 106 + \frac{41}{5} \cdot \frac{25}{41} = 106 + 5 = 111\).
2. \(1 + 0.85 \cdot \frac{16}{17} = 1 + \frac{17}{20} \cdot \frac{16}{17} = 1 + \frac{4}{5} = 1.8\).
3. \(\frac{55}{81} : \frac{44}{135} + 8\frac{11}{12} = \frac{55}{81} \cdot \frac{135}{44} + \frac{107}{12} = \frac{25}{12} + \frac{107}{12} = 11\).
4. \(2\frac{2}{7} - \frac{303}{400} : \frac{707}{800} = \frac{16}{7} - \frac{303}{400} \cdot \frac{800}{707} = \frac{16}{7} - \frac{6}{7} = \frac{10}{7} = 1\frac{3}{7}\).

Ответ: 1) 111; 2) 1,8; 3) 11; 4) 1 3/7.