We're going to solve 9924 multiplied by 3998
9924 × 3998 = 3998 × (9924)
+ 3998 × 4 resulting in 15992
+ 3998 × 20 yielding 79960
+ 3998 × 900 that is equal 3598200
+ 3998 × 9000 resulting in 35982000

= 39676152
