Alright, let's work through 6357 times 8549 step by step
6357 × 8549 = 8549 × (6357)
+ 8549 × 7 resulting in 59843
+ 8549 × 50 producing 427450
+ 8549 × 300 yielding 2564700
+ 8549 × 6000 what gives us 51294000

= 54345993
