No problem, we've got 3981 and 5790 to multiply
3981 × 5790 = 5790 × (3981)
+ 5790 × 1 that equals 5790
+ 5790 × 80 giving us 463200
+ 5790 × 900 producing 5211000
+ 5790 × 3000 producing 17370000

= 23049990
