No problem, we've got 6687 and 9994 to multiply
6687 × 9994 = 9994 × (6687)
+ 9994 × 7 yielding 69958
+ 9994 × 80 that equals 799520
+ 9994 × 600 what gives us 5996400
+ 9994 × 6000 yielding 59964000

= 66829878
