Alright, let's work through 3091 times 6557 step by step
3091 × 6557 = 6557 × (3091)
+ 6557 × 1 resulting in 6557
+ 6557 × 90 that is equal 590130
+ 6557 × 000 that equals 0
+ 6557 × 3000 producing 19671000

= 20267687
