Alright, let's work through 3907 times 2821 step by step
3907 × 2821 = 2821 × (3907)
+ 2821 × 7 that results in 19747
+ 2821 × 00 which equals 0
+ 2821 × 900 that results in 2538900
+ 2821 × 3000 that equals 8463000

= 11021647
