No problem, we've got 1023 and 6497 to multiply
1023 × 6497 = 6497 × (1023)
+ 6497 × 3 that equals 19491
+ 6497 × 20 producing 129940
+ 6497 × 000 which equals 0
+ 6497 × 1000 producing 6497000

= 6646431
