Alright, let's work through 5647 times 857 step by step
5647 × 857 = 857 × (5647)
+ 857 × 7 which equals 5999
+ 857 × 40 giving us 34280
+ 857 × 600 yielding 514200
+ 857 × 5000 that results in 4285000

= 4839479
