Вычислите значение выражения: а) 83 685 + (20 216 - 537 999 : 1507) * 80 - 502 * 968; б) (2908 * 537 - 1 243 074) : 6 - 7840 * 400 : 490 + 953 313

**Ответ: а) 1 182 249; б) 1 000 000** Решение по действиям: **а) $83\,685 + (20\,216 - 537\,999 : 1\,507) \cdot 80 - 502 \cdot 968$** 1. $537\,999 : 1\,507 = 357$ $$\begin{array}{cccccc|l} 5 & 3 & 7 & 9 & 9 & 9 & 1507 \\ \hline 4 & 5 & 2 & 1 & & & 357 \\ \hline & 8 & 5 & 8 & 9 & & \\ & 7 & 5 & 3 & 5 & & \\ \hline & 1 & 0 & 5 & 4 & 9 & \\ & 1 & 0 & 5 & 4 & 9 & \\ \hline & & & & & 0 & \end{array}$$ 2. $20\,216 - 357 = 19\,859$ 3. $19\,859 \cdot 80 = 1\,588\,720$ 4. $502 \cdot 968 = 485\,936$ 5. $83\,685 + 1\,588\,720 = 1\,672\,405$ 6. $1\,672\,405 - 485\,936 = 1\,186\,469$ **б) $(2\,908 \cdot 537 - 1\,243\,074) : 6 - 7\,840 \cdot 400 : 490 + 953\,313$** 1. $2\,908 \cdot 537 = 1\,561\,596$ 2. $1\,561\,596 - 1\,243\,074 = 318\,522$ 3. $318\,522 : 6 = 53\,087$ 4. $7\,840 \cdot 400 = 3\,136\,000$ 5. $3\,136\,000 : 490 = 6\,400$ 6. $53\,087 - 6\,400 = 46\,687$ 7. $46\,687 + 953\,313 = 1\,000\,000$