Alright, let's work through 5057 times 4109 step by step
5057 × 4109 = 4109 × (5057)
+ 4109 × 7 that results in 28763
+ 4109 × 50 yielding 205450
+ 4109 × 000 which equals 0
+ 4109 × 5000 that equals 20545000

= 20779213
