Alright, let's work through 5489 times 857 step by step
5489 × 857 = 857 × (5489)
+ 857 × 9 yielding 7713
+ 857 × 80 producing 68560
+ 857 × 400 that equals 342800
+ 857 × 5000 what gives us 4285000

= 4704073
