No problem, we've got 1611 and 6397 to multiply
1611 × 6397 = 6397 × (1611)
+ 6397 × 1 which equals 6397
+ 6397 × 10 yielding 63970
+ 6397 × 600 that results in 3838200
+ 6397 × 1000 resulting in 6397000

= 10305567
