We're going to solve 1215 multiplied by 8391
1215 × 8391 = 8391 × (1215)
+ 8391 × 5 that results in 41955
+ 8391 × 10 giving us 83910
+ 8391 × 200 giving us 1678200
+ 8391 × 1000 giving us 8391000

= 10195065
