Alright, let's work through 5129 times 8112 step by step
5129 × 8112 = 8112 × (5129)
+ 8112 × 9 giving us 73008
+ 8112 × 20 resulting in 162240
+ 8112 × 100 what gives us 811200
+ 8112 × 5000 producing 40560000

= 41606448
