We're going to solve 3991 multiplied by 4286
3991 × 4286 = 4286 × (3991)
+ 4286 × 1 which equals 4286
+ 4286 × 90 that is equal 385740
+ 4286 × 900 which equals 3857400
+ 4286 × 3000 that equals 12858000

= 17105426
