Alright, let's work through 5005 times 3605 step by step
5005 × 3605 = 3605 × (5005)
+ 3605 × 5 what gives us 18025
+ 3605 × 00 what gives us 0
+ 3605 × 000 what gives us 0
+ 3605 × 5000 that equals 18025000

= 18043025
