Alright, let's work through 6870 times 8397 step by step
6870 × 8397 = 8397 × (6870)
+ 8397 × 0 that equals 0
+ 8397 × 70 that equals 587790
+ 8397 × 800 yielding 6717600
+ 8397 × 6000 which equals 50382000

= 57687390
