We're going to solve 6789 multiplied by 1080
6789 × 1080 = 1080 × (6789)
+ 1080 × 9 yielding 9720
+ 1080 × 80 that equals 86400
+ 1080 × 700 yielding 756000
+ 1080 × 6000 resulting in 6480000

= 7332120
