Alright, let's work through 5011 times 7808 step by step
5011 × 7808 = 7808 × (5011)
+ 7808 × 1 resulting in 7808
+ 7808 × 10 what gives us 78080
+ 7808 × 000 yielding 0
+ 7808 × 5000 which equals 39040000

= 39125888
