Alright, let's work through 4909 times 9890 step by step
4909 × 9890 = 9890 × (4909)
+ 9890 × 9 giving us 89010
+ 9890 × 00 which equals 0
+ 9890 × 900 producing 8901000
+ 9890 × 4000 yielding 39560000

= 48550010
