No problem, we've got 6642 and 3463 to multiply
6642 × 3463 = 3463 × (6642)
+ 3463 × 2 which equals 6926
+ 3463 × 40 what gives us 138520
+ 3463 × 600 giving us 2077800
+ 3463 × 6000 what gives us 20778000

= 23001246
