No problem, we've got 6661 and 7889 to multiply
6661 × 7889 = 7889 × (6661)
+ 7889 × 1 producing 7889
+ 7889 × 60 giving us 473340
+ 7889 × 600 what gives us 4733400
+ 7889 × 6000 yielding 47334000

= 52548629
