Alright, let's work through 6872 times 4210 step by step
6872 × 4210 = 4210 × (6872)
+ 4210 × 2 giving us 8420
+ 4210 × 70 giving us 294700
+ 4210 × 800 that is equal 3368000
+ 4210 × 6000 giving us 25260000

= 28931120
