Alright, let's work through 7878 times 8653 step by step
7878 × 8653 = 8653 × (7878)
+ 8653 × 8 that equals 69224
+ 8653 × 70 producing 605710
+ 8653 × 800 resulting in 6922400
+ 8653 × 7000 yielding 60571000

= 68168334
