Alright, let's work through 9001 times 4777 step by step
9001 × 4777 = 4777 × (9001)
+ 4777 × 1 producing 4777
+ 4777 × 00 which equals 0
+ 4777 × 000 resulting in 0
+ 4777 × 9000 that equals 42993000

= 42997777
