We're going to solve 1581 multiplied by 9968
1581 × 9968 = 9968 × (1581)
+ 9968 × 1 what gives us 9968
+ 9968 × 80 that equals 797440
+ 9968 × 500 that results in 4984000
+ 9968 × 1000 resulting in 9968000

= 15759408
