Alright, let's work through 4139 times 8397 step by step
4139 × 8397 = 8397 × (4139)
+ 8397 × 9 resulting in 75573
+ 8397 × 30 which equals 251910
+ 8397 × 100 yielding 839700
+ 8397 × 4000 giving us 33588000

= 34755183
