We're going to solve 1815 multiplied by 3947
1815 × 3947 = 3947 × (1815)
+ 3947 × 5 resulting in 19735
+ 3947 × 10 that equals 39470
+ 3947 × 800 resulting in 3157600
+ 3947 × 1000 producing 3947000

= 7163805
