No problem, we've got 1981 and 6655 to multiply
1981 × 6655 = 6655 × (1981)
+ 6655 × 1 that is equal 6655
+ 6655 × 80 yielding 532400
+ 6655 × 900 producing 5989500
+ 6655 × 1000 resulting in 6655000

= 13183555
