Alright, let's work through 1676 times 3966 step by step
1676 × 3966 = 3966 × (1676)
+ 3966 × 6 producing 23796
+ 3966 × 70 what gives us 277620
+ 3966 × 600 giving us 2379600
+ 3966 × 1000 yielding 3966000

= 6647016
