Alright, let's work through 3899 times 6585 step by step
3899 × 6585 = 6585 × (3899)
+ 6585 × 9 giving us 59265
+ 6585 × 90 what gives us 592650
+ 6585 × 800 resulting in 5268000
+ 6585 × 3000 what gives us 19755000

= 25674915
