Alright, let's work through 6665 times 8584 step by step
6665 × 8584 = 8584 × (6665)
+ 8584 × 5 that equals 42920
+ 8584 × 60 yielding 515040
+ 8584 × 600 that equals 5150400
+ 8584 × 6000 giving us 51504000

= 57212360
