No problem, we've got 6447 and 8164 to multiply
6447 × 8164 = 8164 × (6447)
+ 8164 × 7 which equals 57148
+ 8164 × 40 that equals 326560
+ 8164 × 400 giving us 3265600
+ 8164 × 6000 yielding 48984000

= 52633308
