No problem, we've got 4115 and 668 to multiply
4115 × 668 = 668 × (4115)
+ 668 × 5 which equals 3340
+ 668 × 10 that is equal 6680
+ 668 × 100 that is equal 66800
+ 668 × 4000 yielding 2672000

= 2748820
