Let's calculate 4555 x 8421
4555 × 8421 = 8421 × (4555)
+ 8421 × 5 what gives us 42105
+ 8421 × 50 that results in 421050
+ 8421 × 500 resulting in 4210500
+ 8421 × 4000 that is equal 33684000

= 38357655
