Alright, let's work through 64603686 times 79307928 step by step
64603686 × 79307928 = 79307928 × (64603686)
+ 79307928 × 6 that equals 475847568
+ 79307928 × 80 that is equal 6344634240
+ 79307928 × 600 giving us 47584756800
+ 79307928 × 3000 giving us 237923784000
+ 79307928 × 00000 yielding 0
+ 79307928 × 600000 giving us 47584756800000
+ 79307928 × 4000000 producing 317231712000000
+ 79307928 × 60000000 yielding 4758475680000000

= 5123584477822608
