Alright, let's work through 61404355 times 42630621 step by step
61404355 × 42630621 = 42630621 × (61404355)
+ 42630621 × 5 which equals 213153105
+ 42630621 × 50 producing 2131531050
+ 42630621 × 300 that results in 12789186300
+ 42630621 × 4000 that results in 170522484000
+ 42630621 × 00000 that results in 0
+ 42630621 × 400000 giving us 17052248400000
+ 42630621 × 1000000 producing 42630621000000
+ 42630621 × 60000000 which equals 2557837260000000

= 2617705785754455
