No problem, we've got 6397 and 6684 to multiply
6397 × 6684 = 6684 × (6397)
+ 6684 × 7 that equals 46788
+ 6684 × 90 yielding 601560
+ 6684 × 300 resulting in 2005200
+ 6684 × 6000 that results in 40104000

= 42757548
