No problem, we've got 2640 and 8617 to multiply
2640 × 8617 = 8617 × (2640)
+ 8617 × 0 that equals 0
+ 8617 × 40 that is equal 344680
+ 8617 × 600 what gives us 5170200
+ 8617 × 2000 which equals 17234000

= 22748880
