No problem, we've got 8613 and 7990 to multiply
8613 × 7990 = 7990 × (8613)
+ 7990 × 3 what gives us 23970
+ 7990 × 10 what gives us 79900
+ 7990 × 600 producing 4794000
+ 7990 × 8000 giving us 63920000

= 68817870
