No problem, we've got 6440581 and 6742626 to multiply
6440581 × 6742626 = 6742626 × (6440581)
+ 6742626 × 1 giving us 6742626
+ 6742626 × 80 yielding 539410080
+ 6742626 × 500 giving us 3371313000
+ 6742626 × 0000 that results in 0
+ 6742626 × 40000 which equals 269705040000
+ 6742626 × 400000 that results in 2697050400000
+ 6742626 × 6000000 that is equal 40455756000000

= 43426428905706
