No problem, we've got 6307 and 2122 to multiply
6307 × 2122 = 2122 × (6307)
+ 2122 × 7 that is equal 14854
+ 2122 × 00 yielding 0
+ 2122 × 300 giving us 636600
+ 2122 × 6000 giving us 12732000

= 13383454
