Alright, let's work through 2684 times 7723 step by step
2684 × 7723 = 7723 × (2684)
+ 7723 × 4 that is equal 30892
+ 7723 × 80 resulting in 617840
+ 7723 × 600 that equals 4633800
+ 7723 × 2000 which equals 15446000

= 20728532
