Alright, let's work through 4909 times 1281 step by step
4909 × 1281 = 1281 × (4909)
+ 1281 × 9 giving us 11529
+ 1281 × 00 which equals 0
+ 1281 × 900 what gives us 1152900
+ 1281 × 4000 producing 5124000

= 6288429
