We're going to solve 9531 multiplied by 1399
9531 × 1399 = 1399 × (9531)
+ 1399 × 1 that is equal 1399
+ 1399 × 30 giving us 41970
+ 1399 × 500 which equals 699500
+ 1399 × 9000 which equals 12591000

= 13333869
