Alright, let's work through 8143 times 8506 step by step
8143 × 8506 = 8506 × (8143)
+ 8506 × 3 which equals 25518
+ 8506 × 40 yielding 340240
+ 8506 × 100 which equals 850600
+ 8506 × 8000 which equals 68048000

= 69264358
