Ответ:
\(228 + 757 = 985\); \(985 \cdot 74 = 72\,890\); \(72\,890 + 581\,618 = 654\,508\).
\(1\,125 + 875 = 2\,000\); \(2\,000 \cdot 18 = 36\,000\); \(36\,000 + 4\,328 = 40\,328\).
\(7\,535 - 4\,056 = 3\,479\); \(3\,479 \cdot 3 = 10\,437\); \(19\,867 + 10\,437 - 7\,894 = 22\,304\).
Ответ: 654 508; 40 328; 22 304.
