Alright, let's work through 9143 times 4950 step by step
9143 × 4950 = 4950 × (9143)
+ 4950 × 3 that results in 14850
+ 4950 × 40 that results in 198000
+ 4950 × 100 that results in 495000
+ 4950 × 9000 resulting in 44550000

= 45257850
