Alright, let's work through 2618 times 6421 step by step
2618 × 6421 = 6421 × (2618)
+ 6421 × 8 resulting in 51368
+ 6421 × 10 that results in 64210
+ 6421 × 600 that results in 3852600
+ 6421 × 2000 yielding 12842000

= 16810178
