Alright, let's work through 3344 times 4163 step by step
3344 × 4163 = 4163 × (3344)
+ 4163 × 4 which equals 16652
+ 4163 × 40 yielding 166520
+ 4163 × 300 yielding 1248900
+ 4163 × 3000 producing 12489000

= 13921072
