Alright, let's work through 9905 times 5454 step by step
9905 × 5454 = 5454 × (9905)
+ 5454 × 5 yielding 27270
+ 5454 × 00 yielding 0
+ 5454 × 900 that equals 4908600
+ 5454 × 9000 giving us 49086000

= 54021870
