Alright, let's work through 5005 times 2158 step by step
5005 × 2158 = 2158 × (5005)
+ 2158 × 5 resulting in 10790
+ 2158 × 00 producing 0
+ 2158 × 000 yielding 0
+ 2158 × 5000 that results in 10790000

= 10800790
