Alright, let's work through 2321 times 6740 step by step
2321 × 6740 = 6740 × (2321)
+ 6740 × 1 giving us 6740
+ 6740 × 20 that results in 134800
+ 6740 × 300 that is equal 2022000
+ 6740 × 2000 resulting in 13480000

= 15643540
