Alright, let's work through 6879 times 1236 step by step
6879 × 1236 = 1236 × (6879)
+ 1236 × 9 giving us 11124
+ 1236 × 70 producing 86520
+ 1236 × 800 that results in 988800
+ 1236 × 6000 yielding 7416000

= 8502444
