Alright, let's work through 2144 times 6459 step by step
2144 × 6459 = 6459 × (2144)
+ 6459 × 4 giving us 25836
+ 6459 × 40 which equals 258360
+ 6459 × 100 which equals 645900
+ 6459 × 2000 producing 12918000

= 13848096
