Alright, let's work through 4127 times 4721 step by step
4127 × 4721 = 4721 × (4127)
+ 4721 × 7 resulting in 33047
+ 4721 × 20 which equals 94420
+ 4721 × 100 what gives us 472100
+ 4721 × 4000 producing 18884000

= 19483567
