Alright, let's work through 64981103 times 20760579 step by step
64981103 × 20760579 = 20760579 × (64981103)
+ 20760579 × 3 giving us 62281737
+ 20760579 × 00 giving us 0
+ 20760579 × 100 giving us 2076057900
+ 20760579 × 1000 which equals 20760579000
+ 20760579 × 80000 resulting in 1660846320000
+ 20760579 × 900000 giving us 18684521100000
+ 20760579 × 4000000 which equals 83042316000000
+ 20760579 × 60000000 that equals 1245634740000000

= 1349045322338637
