No problem, we've got 3981 and 5527 to multiply
3981 × 5527 = 5527 × (3981)
+ 5527 × 1 what gives us 5527
+ 5527 × 80 resulting in 442160
+ 5527 × 900 that results in 4974300
+ 5527 × 3000 what gives us 16581000

= 22002987
