Alright, let's work through 80794351 times 18039021 step by step
80794351 × 18039021 = 18039021 × (80794351)
+ 18039021 × 1 producing 18039021
+ 18039021 × 50 yielding 901951050
+ 18039021 × 300 which equals 5411706300
+ 18039021 × 4000 what gives us 72156084000
+ 18039021 × 90000 which equals 1623511890000
+ 18039021 × 700000 producing 12627314700000
+ 18039021 × 0000000 which equals 0
+ 18039021 × 80000000 giving us 1443121680000000

= 1457450994370371
