Alright, let's work through 4143 times 2950 step by step
4143 × 2950 = 2950 × (4143)
+ 2950 × 3 that results in 8850
+ 2950 × 40 what gives us 118000
+ 2950 × 100 what gives us 295000
+ 2950 × 4000 what gives us 11800000

= 12221850
