No problem, we've got 3015 and 6981 to multiply
3015 × 6981 = 6981 × (3015)
+ 6981 × 5 what gives us 34905
+ 6981 × 10 that is equal 69810
+ 6981 × 000 giving us 0
+ 6981 × 3000 giving us 20943000

= 21047715
