Alright, let's work through 4113 times 4006 step by step
4113 × 4006 = 4006 × (4113)
+ 4006 × 3 producing 12018
+ 4006 × 10 that equals 40060
+ 4006 × 100 which equals 400600
+ 4006 × 4000 that equals 16024000

= 16476678
