Alright, let's work through 20851069 times 79822264 step by step
20851069 × 79822264 = 79822264 × (20851069)
+ 79822264 × 9 producing 718400376
+ 79822264 × 60 yielding 4789335840
+ 79822264 × 000 what gives us 0
+ 79822264 × 1000 resulting in 79822264000
+ 79822264 × 50000 resulting in 3991113200000
+ 79822264 × 800000 which equals 63857811200000
+ 79822264 × 0000000 what gives us 0
+ 79822264 × 20000000 that results in 1596445280000000

= 1664379534400216
