No problem, we've got 8215 and 8584 to multiply
8215 × 8584 = 8584 × (8215)
+ 8584 × 5 that is equal 42920
+ 8584 × 10 giving us 85840
+ 8584 × 200 which equals 1716800
+ 8584 × 8000 what gives us 68672000

= 70517560
