No problem, we've got 6660 and 1854 to multiply
6660 × 1854 = 1854 × (6660)
+ 1854 × 0 resulting in 0
+ 1854 × 60 what gives us 111240
+ 1854 × 600 resulting in 1112400
+ 1854 × 6000 producing 11124000

= 12347640
