No problem, we've got 6660 and 3290 to multiply
6660 × 3290 = 3290 × (6660)
+ 3290 × 0 that is equal 0
+ 3290 × 60 what gives us 197400
+ 3290 × 600 yielding 1974000
+ 3290 × 6000 which equals 19740000

= 21911400
