No problem, we've got 3057 and 6730 to multiply
3057 × 6730 = 6730 × (3057)
+ 6730 × 7 which equals 47110
+ 6730 × 50 giving us 336500
+ 6730 × 000 which equals 0
+ 6730 × 3000 yielding 20190000

= 20573610
