No problem, we've got 4668 and 3840 to multiply
4668 × 3840 = 3840 × (4668)
+ 3840 × 8 what gives us 30720
+ 3840 × 60 that equals 230400
+ 3840 × 600 that equals 2304000
+ 3840 × 4000 that equals 15360000

= 17925120
