Alright, let's work through 3830 times 4721 step by step
3830 × 4721 = 4721 × (3830)
+ 4721 × 0 that is equal 0
+ 4721 × 30 what gives us 141630
+ 4721 × 800 yielding 3776800
+ 4721 × 3000 producing 14163000

= 18081430
