Alright, let's work through 6878 times 9891 step by step
6878 × 9891 = 9891 × (6878)
+ 9891 × 8 which equals 79128
+ 9891 × 70 that is equal 692370
+ 9891 × 800 which equals 7912800
+ 9891 × 6000 that results in 59346000

= 68030298
