No problem, we've got 3987 and 6988 to multiply
3987 × 6988 = 6988 × (3987)
+ 6988 × 7 giving us 48916
+ 6988 × 80 producing 559040
+ 6988 × 900 what gives us 6289200
+ 6988 × 3000 that equals 20964000

= 27861156
