Alright, let's work through 8429 times 8821 step by step
8429 × 8821 = 8821 × (8429)
+ 8821 × 9 yielding 79389
+ 8821 × 20 yielding 176420
+ 8821 × 400 that results in 3528400
+ 8821 × 8000 which equals 70568000

= 74352209
