Alright, let's work through 2644 times 7884 step by step
2644 × 7884 = 7884 × (2644)
+ 7884 × 4 giving us 31536
+ 7884 × 40 giving us 315360
+ 7884 × 600 that results in 4730400
+ 7884 × 2000 which equals 15768000

= 20845296
