No problem, we've got 6667 and 9952 to multiply
6667 × 9952 = 9952 × (6667)
+ 9952 × 7 giving us 69664
+ 9952 × 60 what gives us 597120
+ 9952 × 600 what gives us 5971200
+ 9952 × 6000 yielding 59712000

= 66349984
