Alright, let's work through 4047 times 4455 step by step
4047 × 4455 = 4455 × (4047)
+ 4455 × 7 that equals 31185
+ 4455 × 40 what gives us 178200
+ 4455 × 000 that equals 0
+ 4455 × 4000 what gives us 17820000

= 18029385
