Alright, let's work through 3084 times 6246 step by step
3084 × 6246 = 6246 × (3084)
+ 6246 × 4 producing 24984
+ 6246 × 80 that results in 499680
+ 6246 × 000 resulting in 0
+ 6246 × 3000 yielding 18738000

= 19262664
