We're going to solve 1689 multiplied by 7873
1689 × 7873 = 7873 × (1689)
+ 7873 × 9 which equals 70857
+ 7873 × 80 resulting in 629840
+ 7873 × 600 giving us 4723800
+ 7873 × 1000 which equals 7873000

= 13297497
