Alright, let's work through 1684 times 7665 step by step
1684 × 7665 = 7665 × (1684)
+ 7665 × 4 producing 30660
+ 7665 × 80 giving us 613200
+ 7665 × 600 giving us 4599000
+ 7665 × 1000 resulting in 7665000

= 12907860
