Alright, let's work through 3151 times 6484 step by step
3151 × 6484 = 6484 × (3151)
+ 6484 × 1 what gives us 6484
+ 6484 × 50 which equals 324200
+ 6484 × 100 that results in 648400
+ 6484 × 3000 yielding 19452000

= 20431084
