We're going to solve 1508 multiplied by 1004
1508 × 1004 = 1004 × (1508)
+ 1004 × 8 yielding 8032
+ 1004 × 00 giving us 0
+ 1004 × 500 what gives us 502000
+ 1004 × 1000 that is equal 1004000

= 1514032
