We're going to solve 1689 multiplied by 9909
1689 × 9909 = 9909 × (1689)
+ 9909 × 9 that equals 89181
+ 9909 × 80 giving us 792720
+ 9909 × 600 resulting in 5945400
+ 9909 × 1000 that is equal 9909000

= 16736301
