Alright, let's work through 2029 times 3820 step by step
2029 × 3820 = 3820 × (2029)
+ 3820 × 9 what gives us 34380
+ 3820 × 20 what gives us 76400
+ 3820 × 000 yielding 0
+ 3820 × 2000 yielding 7640000

= 7750780
