Alright, let's work through 8672 times 2100 step by step
8672 × 2100 = 2100 × (8672)
+ 2100 × 2 which equals 4200
+ 2100 × 70 producing 147000
+ 2100 × 600 resulting in 1260000
+ 2100 × 8000 producing 16800000

= 18211200
