Alright, let's work through 6012 times 2521 step by step
6012 × 2521 = 2521 × (6012)
+ 2521 × 2 that equals 5042
+ 2521 × 10 that equals 25210
+ 2521 × 000 what gives us 0
+ 2521 × 6000 what gives us 15126000

= 15156252
