Alright, let's work through 2431 times 3944 step by step
2431 × 3944 = 3944 × (2431)
+ 3944 × 1 giving us 3944
+ 3944 × 30 yielding 118320
+ 3944 × 400 that equals 1577600
+ 3944 × 2000 that equals 7888000

= 9587864
