2. Вычисляем:
* 483 + 257 = 740
* 621 + 199 = 820
* 356 + 207 = 563
* 820 - 164 = 656
* 408 - 262 = 146
* 9 * 9 - 59 = 81 - 59 = 22
* 15 * 8 : 3 = 120 : 3 = 40
* 30 * 8 : 2 = 240 : 2 = 120
* 60 * 6 : 3 = 360 : 3 = 120
* 6 * 16 : 8 - 2 = 96 : 8 - 2 = 12 - 2 = 10
* 6 * 16 : (8 - 2) = 96 : 6 = 16
* 4 * 15 : 5 * 4 = 60 : 5 * 4 = 12 * 4 = 48