No problem, we've got 3999 and 6292 to multiply
3999 × 6292 = 6292 × (3999)
+ 6292 × 9 resulting in 56628
+ 6292 × 90 what gives us 566280
+ 6292 × 900 what gives us 5662800
+ 6292 × 3000 producing 18876000

= 25161708
