Alright, let's work through 9090 times 5635 step by step
9090 × 5635 = 5635 × (9090)
+ 5635 × 0 yielding 0
+ 5635 × 90 which equals 507150
+ 5635 × 000 resulting in 0
+ 5635 × 9000 that equals 50715000

= 51222150
