Alright, let's work through 4139 times 4657 step by step
4139 × 4657 = 4657 × (4139)
+ 4657 × 9 which equals 41913
+ 4657 × 30 that equals 139710
+ 4657 × 100 that equals 465700
+ 4657 × 4000 that equals 18628000

= 19275323
