715 4 = 2860484 + 1278 = 1762536 5 = 2680
2860 - 1762 * 5 = 2860 - 8810 = -5950
836 * 2 = 16721672 + 2511 = 4183
Therefore, the final answer is -5950 + 4183 = -1767.
715 4 = 2860
484 + 1278 = 1762
536 5 = 2680
2860 - 1762 * 5 = 2860 - 8810 = -5950
836 * 2 = 1672
1672 + 2511 = 4183
Therefore, the final answer is -5950 + 4183 = -1767.