Alright, let's work through 4189 times 6538 step by step
4189 × 6538 = 6538 × (4189)
+ 6538 × 9 that results in 58842
+ 6538 × 80 what gives us 523040
+ 6538 × 100 yielding 653800
+ 6538 × 4000 that results in 26152000

= 27387682
