We're going to solve 8638 multiplied by 4944
8638 × 4944 = 4944 × (8638)
+ 4944 × 8 giving us 39552
+ 4944 × 30 that is equal 148320
+ 4944 × 600 resulting in 2966400
+ 4944 × 8000 producing 39552000

= 42706272
