Alright, let's work through 2991 times 7057 step by step
2991 × 7057 = 7057 × (2991)
+ 7057 × 1 yielding 7057
+ 7057 × 90 producing 635130
+ 7057 × 900 that equals 6351300
+ 7057 × 2000 resulting in 14114000

= 21107487
