Alright, let's work through 6139 times 2142 step by step
6139 × 2142 = 2142 × (6139)
+ 2142 × 9 what gives us 19278
+ 2142 × 30 producing 64260
+ 2142 × 100 that results in 214200
+ 2142 × 6000 giving us 12852000

= 13149738
