Alright, let's work through 8407 times 5129 step by step
8407 × 5129 = 5129 × (8407)
+ 5129 × 7 that results in 35903
+ 5129 × 00 that equals 0
+ 5129 × 400 which equals 2051600
+ 5129 × 8000 resulting in 41032000

= 43119503
