Alright, let's work through 39603394 times 39951401 step by step
39603394 × 39951401 = 39951401 × (39603394)
+ 39951401 × 4 what gives us 159805604
+ 39951401 × 90 that results in 3595626090
+ 39951401 × 300 resulting in 11985420300
+ 39951401 × 3000 producing 119854203000
+ 39951401 × 00000 giving us 0
+ 39951401 × 600000 what gives us 23970840600000
+ 39951401 × 9000000 resulting in 359562609000000
+ 39951401 × 30000000 giving us 1198542030000000

= 1582211074654994
