Alright, let's work through 3889 times 5103 step by step
3889 × 5103 = 5103 × (3889)
+ 5103 × 9 that is equal 45927
+ 5103 × 80 yielding 408240
+ 5103 × 800 that is equal 4082400
+ 5103 × 3000 yielding 15309000

= 19845567
