Alright, let's work through 4287 times 4767 step by step
4287 × 4767 = 4767 × (4287)
+ 4767 × 7 that results in 33369
+ 4767 × 80 yielding 381360
+ 4767 × 200 that equals 953400
+ 4767 × 4000 producing 19068000

= 20436129
