Alright, let's work through 8424 times 8902 step by step
8424 × 8902 = 8902 × (8424)
+ 8902 × 4 producing 35608
+ 8902 × 20 giving us 178040
+ 8902 × 400 producing 3560800
+ 8902 × 8000 that results in 71216000

= 74990448
