Alright, let's work through 5109 times 9099 step by step
5109 × 9099 = 9099 × (5109)
+ 9099 × 9 resulting in 81891
+ 9099 × 00 which equals 0
+ 9099 × 100 giving us 909900
+ 9099 × 5000 yielding 45495000

= 46486791
