Alright, let's work through 2891 times 6645 step by step
2891 × 6645 = 6645 × (2891)
+ 6645 × 1 producing 6645
+ 6645 × 90 that equals 598050
+ 6645 × 800 that equals 5316000
+ 6645 × 2000 that results in 13290000

= 19210695
