Alright, let's work through 5119 times 4007 step by step
5119 × 4007 = 4007 × (5119)
+ 4007 × 9 that is equal 36063
+ 4007 × 10 that is equal 40070
+ 4007 × 100 what gives us 400700
+ 4007 × 5000 yielding 20035000

= 20511833
