1) 4 • 89 • 25 = (4 • 25) • 89 = 100 • 89 = 8900;
2) 2 • 472 • 5 = (2 • 5) • 472 = 10 • 472 = 4720;
3) 5 • 61 • 4 = (5 • 4) • 72 = 20 • 72 = 1440;
4) 50 • 15 • 2 = 15 • (2 • 50) = 15 • 100 = 1500;
5) 125 • 14 • 8 = 14 • (8 • 125) = 14 • 1000 = 14 000;
6) 8 • 36 • 25 = (8 • 25) • 37 = 200 • 37 = 7400.