Alright, let's work through 1647 times 6004 step by step
1647 × 6004 = 6004 × (1647)
+ 6004 × 7 what gives us 42028
+ 6004 × 40 that equals 240160
+ 6004 × 600 producing 3602400
+ 6004 × 1000 producing 6004000

= 9888588
