No problem, we've got 99664484 and 40091705 to multiply
99664484 × 40091705 = 40091705 × (99664484)
+ 40091705 × 4 which equals 160366820
+ 40091705 × 80 that is equal 3207336400
+ 40091705 × 400 that is equal 16036682000
+ 40091705 × 4000 giving us 160366820000
+ 40091705 × 60000 yielding 2405502300000
+ 40091705 × 600000 that results in 24055023000000
+ 40091705 × 9000000 which equals 360825345000000
+ 40091705 × 90000000 producing 3608253450000000

= 3995719091505220
