We're going to solve 9945 multiplied by 1591
9945 × 1591 = 1591 × (9945)
+ 1591 × 5 that is equal 7955
+ 1591 × 40 that equals 63640
+ 1591 × 900 yielding 1431900
+ 1591 × 9000 what gives us 14319000

= 15822495
