Alright, let's work through 2139 times 5125 step by step
2139 × 5125 = 5125 × (2139)
+ 5125 × 9 producing 46125
+ 5125 × 30 that results in 153750
+ 5125 × 100 producing 512500
+ 5125 × 2000 producing 10250000

= 10962375
