Alright, let's work through 4113 times 3645 step by step
4113 × 3645 = 3645 × (4113)
+ 3645 × 3 producing 10935
+ 3645 × 10 which equals 36450
+ 3645 × 100 that equals 364500
+ 3645 × 4000 yielding 14580000

= 14991885
