No problem, we've got 6663534 and 6480646 to multiply
6663534 × 6480646 = 6480646 × (6663534)
+ 6480646 × 4 what gives us 25922584
+ 6480646 × 30 that is equal 194419380
+ 6480646 × 500 producing 3240323000
+ 6480646 × 3000 yielding 19441938000
+ 6480646 × 60000 giving us 388838760000
+ 6480646 × 600000 yielding 3888387600000
+ 6480646 × 6000000 resulting in 38883876000000

= 43184004962964
