Alright, let's work through 6444 times 1612 step by step
6444 × 1612 = 1612 × (6444)
+ 1612 × 4 that results in 6448
+ 1612 × 40 giving us 64480
+ 1612 × 400 resulting in 644800
+ 1612 × 6000 which equals 9672000

= 10387728
