Alright, let's work through 79955864 times 80840274 step by step
79955864 × 80840274 = 80840274 × (79955864)
+ 80840274 × 4 which equals 323361096
+ 80840274 × 60 that equals 4850416440
+ 80840274 × 800 yielding 64672219200
+ 80840274 × 5000 what gives us 404201370000
+ 80840274 × 50000 producing 4042013700000
+ 80840274 × 900000 yielding 72756246600000
+ 80840274 × 9000000 giving us 727562466000000
+ 80840274 × 70000000 producing 5658819180000000

= 6463653953666736
