Alright, let's work through 9955 times 4278 step by step
9955 × 4278 = 4278 × (9955)
+ 4278 × 5 yielding 21390
+ 4278 × 50 what gives us 213900
+ 4278 × 900 that equals 3850200
+ 4278 × 9000 yielding 38502000

= 42587490
