We're going to solve 1579 multiplied by 9957
1579 × 9957 = 9957 × (1579)
+ 9957 × 9 what gives us 89613
+ 9957 × 70 resulting in 696990
+ 9957 × 500 what gives us 4978500
+ 9957 × 1000 yielding 9957000

= 15722103
