Alright, let's work through 8103 times 1849 step by step
8103 × 1849 = 1849 × (8103)
+ 1849 × 3 that results in 5547
+ 1849 × 00 giving us 0
+ 1849 × 100 producing 184900
+ 1849 × 8000 that is equal 14792000

= 14982447
