Alright, let's work through 6644 times 3124 step by step
6644 × 3124 = 3124 × (6644)
+ 3124 × 4 that equals 12496
+ 3124 × 40 that results in 124960
+ 3124 × 600 giving us 1874400
+ 3124 × 6000 which equals 18744000

= 20755856
