Alright, let's work through 3499 times 1143 step by step
3499 × 1143 = 1143 × (3499)
+ 1143 × 9 that equals 10287
+ 1143 × 90 that is equal 102870
+ 1143 × 400 what gives us 457200
+ 1143 × 3000 yielding 3429000

= 3999357
