Alright, let's work through 4016 times 9983 step by step
4016 × 9983 = 9983 × (4016)
+ 9983 × 6 which equals 59898
+ 9983 × 10 giving us 99830
+ 9983 × 000 that equals 0
+ 9983 × 4000 that results in 39932000

= 40091728
