No problem, we've got 8105 and 2864 to multiply
8105 × 2864 = 2864 × (8105)
+ 2864 × 5 producing 14320
+ 2864 × 00 producing 0
+ 2864 × 100 that is equal 286400
+ 2864 × 8000 giving us 22912000

= 23212720
