Alright, let's work through 2587 times 6649 step by step
2587 × 6649 = 6649 × (2587)
+ 6649 × 7 what gives us 46543
+ 6649 × 80 giving us 531920
+ 6649 × 500 producing 3324500
+ 6649 × 2000 resulting in 13298000

= 17200963
