No problem, we've got 6164 and 7645 to multiply
6164 × 7645 = 7645 × (6164)
+ 7645 × 4 what gives us 30580
+ 7645 × 60 producing 458700
+ 7645 × 100 which equals 764500
+ 7645 × 6000 which equals 45870000

= 47123780
