We're going to solve 3891 multiplied by 1863
3891 × 1863 = 1863 × (3891)
+ 1863 × 1 resulting in 1863
+ 1863 × 90 that equals 167670
+ 1863 × 800 giving us 1490400
+ 1863 × 3000 giving us 5589000

= 7248933
