Alright, let's work through 7143 times 8157 step by step
7143 × 8157 = 8157 × (7143)
+ 8157 × 3 resulting in 24471
+ 8157 × 40 that equals 326280
+ 8157 × 100 that results in 815700
+ 8157 × 7000 resulting in 57099000

= 58265451
