Alright, let's work through 8121 times 971 step by step
8121 × 971 = 971 × (8121)
+ 971 × 1 yielding 971
+ 971 × 20 that is equal 19420
+ 971 × 100 that results in 97100
+ 971 × 8000 yielding 7768000

= 7885491
