No problem, we've got 6780 and 2238 to multiply
6780 × 2238 = 2238 × (6780)
+ 2238 × 0 what gives us 0
+ 2238 × 80 that equals 179040
+ 2238 × 700 resulting in 1566600
+ 2238 × 6000 that equals 13428000

= 15173640
