Alright, let's work through 8620 times 7855 step by step
8620 × 7855 = 7855 × (8620)
+ 7855 × 0 resulting in 0
+ 7855 × 20 yielding 157100
+ 7855 × 600 giving us 4713000
+ 7855 × 8000 giving us 62840000

= 67710100
