No problem, we've got 6538 and 6657 to multiply
6538 × 6657 = 6657 × (6538)
+ 6657 × 8 giving us 53256
+ 6657 × 30 producing 199710
+ 6657 × 500 what gives us 3328500
+ 6657 × 6000 yielding 39942000

= 43523466
