No problem, we've got 9864 and 2115 to multiply
9864 × 2115 = 2115 × (9864)
+ 2115 × 4 resulting in 8460
+ 2115 × 60 producing 126900
+ 2115 × 800 what gives us 1692000
+ 2115 × 9000 that results in 19035000

= 20862360
