Alright, let's work through 8291 times 8429 step by step
8291 × 8429 = 8429 × (8291)
+ 8429 × 1 what gives us 8429
+ 8429 × 90 yielding 758610
+ 8429 × 200 that is equal 1685800
+ 8429 × 8000 what gives us 67432000

= 69884839
