Alright, let's work through 2510 times 6420 step by step
2510 × 6420 = 6420 × (2510)
+ 6420 × 0 yielding 0
+ 6420 × 10 that is equal 64200
+ 6420 × 500 what gives us 3210000
+ 6420 × 2000 that is equal 12840000

= 16114200
