We're going to solve 1791 multiplied by 7791
1791 × 7791 = 7791 × (1791)
+ 7791 × 1 which equals 7791
+ 7791 × 90 that is equal 701190
+ 7791 × 700 that results in 5453700
+ 7791 × 1000 that results in 7791000

= 13953681
