No problem, we've got 8431 and 9164 to multiply
8431 × 9164 = 9164 × (8431)
+ 9164 × 1 that is equal 9164
+ 9164 × 30 resulting in 274920
+ 9164 × 400 resulting in 3665600
+ 9164 × 8000 producing 73312000

= 77261684
