We're going to solve 1004 multiplied by 6000
1004 × 6000 = 6000 × (1004)
+ 6000 × 4 what gives us 24000
+ 6000 × 00 what gives us 0
+ 6000 × 000 that results in 0
+ 6000 × 1000 yielding 6000000

= 6024000
