Alright, let's work through 51396812 times 15410845 step by step
51396812 × 15410845 = 15410845 × (51396812)
+ 15410845 × 2 giving us 30821690
+ 15410845 × 10 producing 154108450
+ 15410845 × 800 that results in 12328676000
+ 15410845 × 6000 that equals 92465070000
+ 15410845 × 90000 that equals 1386976050000
+ 15410845 × 300000 that results in 4623253500000
+ 15410845 × 1000000 yielding 15410845000000
+ 15410845 × 50000000 what gives us 770542250000000

= 792068303226140
