Alright, let's work through 1254 times 5005 step by step
1254 × 5005 = 5005 × (1254)
+ 5005 × 4 what gives us 20020
+ 5005 × 50 which equals 250250
+ 5005 × 200 yielding 1001000
+ 5005 × 1000 giving us 5005000

= 6276270
