Alright, let's work through 1628 times 7504 step by step
1628 × 7504 = 7504 × (1628)
+ 7504 × 8 producing 60032
+ 7504 × 20 what gives us 150080
+ 7504 × 600 which equals 4502400
+ 7504 × 1000 yielding 7504000

= 12216512
