Let's calculate 9899 x 4355
9899 × 4355 = 4355 × (9899)
+ 4355 × 9 yielding 39195
+ 4355 × 90 that is equal 391950
+ 4355 × 800 resulting in 3484000
+ 4355 × 9000 that results in 39195000

= 43110145
