Alright, let's work through 3979 times 3425 step by step
3979 × 3425 = 3425 × (3979)
+ 3425 × 9 giving us 30825
+ 3425 × 70 producing 239750
+ 3425 × 900 yielding 3082500
+ 3425 × 3000 producing 10275000

= 13628075
