No problem, we've got 2661 and 6388 to multiply
2661 × 6388 = 6388 × (2661)
+ 6388 × 1 what gives us 6388
+ 6388 × 60 producing 383280
+ 6388 × 600 what gives us 3832800
+ 6388 × 2000 yielding 12776000

= 16998468
