We're going to solve 4048 multiplied by 5038
4048 × 5038 = 5038 × (4048)
+ 5038 × 8 producing 40304
+ 5038 × 40 resulting in 201520
+ 5038 × 000 producing 0
+ 5038 × 4000 what gives us 20152000

= 20393824
