No problem, we've got 6639 and 9926 to multiply
6639 × 9926 = 9926 × (6639)
+ 9926 × 9 yielding 89334
+ 9926 × 30 giving us 297780
+ 9926 × 600 resulting in 5955600
+ 9926 × 6000 yielding 59556000

= 65898714
