Alright, let's work through 6831 times 8470 step by step
6831 × 8470 = 8470 × (6831)
+ 8470 × 1 that results in 8470
+ 8470 × 30 yielding 254100
+ 8470 × 800 that equals 6776000
+ 8470 × 6000 that equals 50820000

= 57858570
