Alright, let's work through 1684 times 6408 step by step
1684 × 6408 = 6408 × (1684)
+ 6408 × 4 that is equal 25632
+ 6408 × 80 which equals 512640
+ 6408 × 600 giving us 3844800
+ 6408 × 1000 that results in 6408000

= 10791072
