No problem, we've got 8428 and 7968 to multiply
8428 × 7968 = 7968 × (8428)
+ 7968 × 8 that results in 63744
+ 7968 × 20 what gives us 159360
+ 7968 × 400 what gives us 3187200
+ 7968 × 8000 producing 63744000

= 67154304
