Alright, let's work through 3689 times 2657 step by step
3689 × 2657 = 2657 × (3689)
+ 2657 × 9 resulting in 23913
+ 2657 × 80 what gives us 212560
+ 2657 × 600 producing 1594200
+ 2657 × 3000 yielding 7971000

= 9801673
