We're going to solve 1684 multiplied by 4375
1684 × 4375 = 4375 × (1684)
+ 4375 × 4 resulting in 17500
+ 4375 × 80 yielding 350000
+ 4375 × 600 which equals 2625000
+ 4375 × 1000 producing 4375000

= 7367500
