Alright, let's work through 8245 times 839 step by step
8245 × 839 = 839 × (8245)
+ 839 × 5 yielding 4195
+ 839 × 40 which equals 33560
+ 839 × 200 that results in 167800
+ 839 × 8000 which equals 6712000

= 6917555
