No problem, we've got 3464 and 6720 to multiply
3464 × 6720 = 6720 × (3464)
+ 6720 × 4 that equals 26880
+ 6720 × 60 what gives us 403200
+ 6720 × 400 producing 2688000
+ 6720 × 3000 giving us 20160000

= 23278080
