Alright, let's work through 4112 times 3645 step by step
4112 × 3645 = 3645 × (4112)
+ 3645 × 2 what gives us 7290
+ 3645 × 10 what gives us 36450
+ 3645 × 100 that is equal 364500
+ 3645 × 4000 that is equal 14580000

= 14988240
