No problem, we've got 6783 and 3207 to multiply
6783 × 3207 = 3207 × (6783)
+ 3207 × 3 what gives us 9621
+ 3207 × 80 what gives us 256560
+ 3207 × 700 giving us 2244900
+ 3207 × 6000 which equals 19242000

= 21753081
