Alright, let's work through 4004 times 6291 step by step
4004 × 6291 = 6291 × (4004)
+ 6291 × 4 that equals 25164
+ 6291 × 00 resulting in 0
+ 6291 × 000 producing 0
+ 6291 × 4000 yielding 25164000

= 25189164
