Alright, let's work through 2139 times 1848 step by step
2139 × 1848 = 1848 × (2139)
+ 1848 × 9 producing 16632
+ 1848 × 30 what gives us 55440
+ 1848 × 100 giving us 184800
+ 1848 × 2000 that is equal 3696000

= 3952872
