No problem, we've got 6448 and 8140 to multiply
6448 × 8140 = 8140 × (6448)
+ 8140 × 8 that equals 65120
+ 8140 × 40 what gives us 325600
+ 8140 × 400 giving us 3256000
+ 8140 × 6000 that equals 48840000

= 52486720
