Let's calculate 8264 x 9864
8264 × 9864 = 9864 × (8264)
+ 9864 × 4 resulting in 39456
+ 9864 × 60 that is equal 591840
+ 9864 × 200 yielding 1972800
+ 9864 × 8000 that results in 78912000

= 81516096
