Alright, let's work through 2778 times 6308 step by step
2778 × 6308 = 6308 × (2778)
+ 6308 × 8 giving us 50464
+ 6308 × 70 giving us 441560
+ 6308 × 700 yielding 4415600
+ 6308 × 2000 producing 12616000

= 17523624
