Alright, let's work through 8021 times 2129 step by step
8021 × 2129 = 2129 × (8021)
+ 2129 × 1 which equals 2129
+ 2129 × 20 that is equal 42580
+ 2129 × 000 yielding 0
+ 2129 × 8000 yielding 17032000

= 17076709
