No problem, we've got 2664 and 6622 to multiply
2664 × 6622 = 6622 × (2664)
+ 6622 × 4 which equals 26488
+ 6622 × 60 what gives us 397320
+ 6622 × 600 that is equal 3973200
+ 6622 × 2000 which equals 13244000

= 17641008
