We're going to solve 1728 multiplied by 7986
1728 × 7986 = 7986 × (1728)
+ 7986 × 8 that is equal 63888
+ 7986 × 20 that equals 159720
+ 7986 × 700 producing 5590200
+ 7986 × 1000 resulting in 7986000

= 13799808
