Alright, let's work through 8189 times 1680 step by step
8189 × 1680 = 1680 × (8189)
+ 1680 × 9 that equals 15120
+ 1680 × 80 that equals 134400
+ 1680 × 100 producing 168000
+ 1680 × 8000 yielding 13440000

= 13757520
