No problem, we've got 9979 and 8171 to multiply
9979 × 8171 = 8171 × (9979)
+ 8171 × 9 that is equal 73539
+ 8171 × 70 producing 571970
+ 8171 × 900 that is equal 7353900
+ 8171 × 9000 producing 73539000

= 81538409
