No problem, we've got 1919 and 6660 to multiply
1919 × 6660 = 6660 × (1919)
+ 6660 × 9 giving us 59940
+ 6660 × 10 yielding 66600
+ 6660 × 900 resulting in 5994000
+ 6660 × 1000 what gives us 6660000

= 12780540
