We're going to solve 4013 multiplied by 9984
4013 × 9984 = 9984 × (4013)
+ 9984 × 3 resulting in 29952
+ 9984 × 10 what gives us 99840
+ 9984 × 000 that is equal 0
+ 9984 × 4000 that results in 39936000

= 40065792
