Alright, let's work through 2129 times 2331 step by step
2129 × 2331 = 2331 × (2129)
+ 2331 × 9 that results in 20979
+ 2331 × 20 giving us 46620
+ 2331 × 100 resulting in 233100
+ 2331 × 2000 that equals 4662000

= 4962699
