Alright, let's work through 3930 times 4166 step by step
3930 × 4166 = 4166 × (3930)
+ 4166 × 0 that equals 0
+ 4166 × 30 what gives us 124980
+ 4166 × 900 which equals 3749400
+ 4166 × 3000 producing 12498000

= 16372380
