Alright, let's work through 3904 times 6613 step by step
3904 × 6613 = 6613 × (3904)
+ 6613 × 4 which equals 26452
+ 6613 × 00 yielding 0
+ 6613 × 900 that equals 5951700
+ 6613 × 3000 which equals 19839000

= 25817152
