We're going to solve 3591 multiplied by 8721
3591 × 8721 = 8721 × (3591)
+ 8721 × 1 that equals 8721
+ 8721 × 90 giving us 784890
+ 8721 × 500 that results in 4360500
+ 8721 × 3000 that equals 26163000

= 31317111
