Alright, let's work through 4511 times 4006 step by step
4511 × 4006 = 4006 × (4511)
+ 4006 × 1 that is equal 4006
+ 4006 × 10 producing 40060
+ 4006 × 500 resulting in 2003000
+ 4006 × 4000 what gives us 16024000

= 18071066
